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This figure is made with Tkiz package, I need suggestions to make font more bigger and more readable. I tried many solutions such as Large but still not able to increase the font more clear. My advisor told me to use the spaces in the image attached. Any suggestions to make the font more clear and bigger ??

    documentclass[tikz,border=3.14mm]{standalone}

     usetikzlibrary{positioning,calc,arrows.meta}





  begin{document}





begin{tikzpicture}[framed]

        node (A) at (-8.5,+1){};

        node (B) at (-8.5,-15){};

        draw[-] (A)--(B);

        node[right=-10.3 of A] (b) (russell) at (1.8,0)

        {includegraphics[width=1.2cm]{Figures/c2}};



        node (C) at (-7.1,+1){};

        node (D) at (-7.1,-15){};

        draw[-] (C)--(D);



        node (A) at (-7.8,-1.3){};

        node (B) at (-7.8,-15){};

        draw[->,green] (A)--(B);









        node[xshift=-2.7cm] (a) {Largetextcolor{red}{$v_1$ generate a temporary key pair list} };







        draw[->,cyan] ([yshift=.3cm,xshift=4cm]a.east) --+ (4,0) node[black,midway,above=.1cm] {Large $Mx^{1}_{v_{1}}$};





        draw[<-,cyan] ([yshift=-.1cm,xshift=4cm]a.east) --+ (4,0) node[text width=4cm,black,midway,below=.1cm] {Large$mathcal{T}_{1}= M_{1} || Z_{H_{1}}$  };



    node[right=10.6 of a,yellow!70!black, yshift=-.7cm,xshift=1.4cm] (b) {Largetextcolor{black}{$H_1$}};



    node[right=8.3 of a] (b) (russell) at (4.1,0)

    {includegraphics[width=1.4cm]{Figures/R}};



        node[right=0.01 of b] {

            %LARGE

            Large

            begin{tabular}{l}

            point  Generates: $M_1 = {Mx^{1}_{v_{1}}, (t_1, Max_{H_{1})}}$ \

            point  Determine $mathrm{Sh}_{H_1}(M_1)$

            end{tabular}

        };





        begin{scope}[yshift=-3cm]





        node[xshift=-2.2cm] (a) {

            %LARGE

            Large

            begin{tabular}{p{9cm}}

            textcolor{red}{point Execute the algorithm to get ($G_{mathcal{T}_{1}})$} \

            point $L_{H_{1}}=(mathcal{T}_{1}||G_{mathcal{T}_{1}}||Mx^{2}_{v_{1}} ) || sigma_{Pr^{1}_{v_{1}}}(mathcal{T}_{1}, G_{mathcal{T}_{1}}, Mx^{2}_{v_{1}})$

            end{tabular}



        };





        draw[->,cyan] ([yshift=.3cm,xshift=3cm]a.east) --+ (4,0) node[black,midway,above=.1cm] {Large $mathrm{L}_{H_1}$};





        draw[<-,cyan] ([yshift=-.1cm,xshift=1.5cm]a.east) --+ (7,0) node[text width=7.5cm,black,midway,below=.1cm] {Large $mathcal{T}_{2}= M_{2} || Z_{H_{2}}(M_{1})|| Z_{H_{2}}(M_{2} )  $  };





        node[right=9.4 of a,yellow!70!black, yshift=-.7cm,xshift=1.4cm] (b) {Largetextcolor{black}{$H_2$}};







        node[right=8.3 of a] (b) (russell) at (4.1,0)

        {includegraphics[width=1.4cm]{Figures/R}};





            node[right=0.01 of b] (c) {

                Large

                begin{tabular}{l}

                point Verifies $mathrm{L}_{H_1}$\

                point Verifies $G_{mathcal{T}_{1}}$ \



                point Generates $M_{2}={Mx^{2}_{v_{1}} || (t_{1}, Max_{H_{1}}) || (t_{2}, Max_{H_{2}})}$   \

                point Determine $Z_{H_{2}}(M_{1})$ \



                point Determine $Z_{H_{2}}(M_{2})$\

                end{tabular}

            };



        end{scope}



    draw[o-o,dashed] (-7,-1.8) -- (30,-1.8);









            draw[o-o,dashed] (-7,-5.6) -- (30,-5.6);





        begin{scope}[yshift=-7.5cm]



        node[xshift=-2.2cm] (a) {

            %LARGE

            Large

            begin{tabular}{p{9cm}}

            textcolor{red}{point execute the The  algorithm to get ($G_{mathcal{T}_{2}})$} \

            point $L_{H_{2}}=({mathcal{T}_{2}||G_{mathcal{T}_{2}}|| Mx^{3}_{v_{1}} ) || sigma_{SK^{1}_{v_{1}}}(mathcal{T}_{2},  G_{mathcal{T}_{2}}, Mx^{3}_{v_{1}}}) $

            end{tabular}



        };





        draw[->,cyan] ([yshift=.3cm,xshift=3cm]a.east) --+ (4,0) node[black,midway,above=.1cm] {Large $mathrm{L}_{H_2}$};





        draw[<-,cyan] ([yshift=-.1cm,xshift=1cm]a.east) --+ (9,0) node[text width=9.5cm,black,midway,below=.1cm] {Large $mathcal{T}_{3}= {M}_{1} || sigma({M_{1}}) || M_{3} ||Z_{H_{3}}(M_{2})  || Z_{H_{3}}(M_{3} )$};





        node[right=9.4 of a,yellow!70!black, yshift=-.7cm,xshift=1.4cm] (b) {Largetextcolor{black}{$H_3$}};







        node[right=8.3 of a] (b) (russell) at (4.1,0)

        {includegraphics[width=1.4cm]{Figures/R}};









            node[right=0.01 of b] (c) {

                Large

                begin{tabular}{l}

                point Verifies $mathrm{L}_{H_2}$ and execution  \

                point Verifies $G_{mathcal{T}_{2}}$ \

                point Determine $Z_{H_{3}}(M_{1})$ \

                point Determine $sigma(M_{1})$ \

                point Generates $M_{3}={Mx^{3}_{v_{1}} || (t_{1}, Max_{H_{1}}) || (t_{2}, Max_{H_{2}} || (t_{3}, Max_{H_{3}})}$ \

                point Determine $Z_{H_{3}}(M_{2})$\

                point Determine $Z_{H_{3}}(M_{3})$\

                end{tabular}

            };



        end{scope}











        draw[o-o,dashed] (-7,-10.7) -- (30,-10.7);





        begin{scope}[yshift=-12.5cm]





        node[xshift=-2.2cm] (a) {

            %LARGE

            Large

            begin{tabular}{p{9cm}}

            textcolor{red}{point execute the The  algorithm to get ($G_{mathcal{T}_{3}}$)} \



            point $L_{H_{3}}=({mathcal{T}_{3}||G_{mathcal{T}_{3}}|| Mx^{4}_{v_{1}} ) || sigma_{SK^{3}_{v_{1}}}(mathcal{T}_{3}, G_{mathcal{T}_{3}}, Mx^{4}_{v_{1}}}) $

            end{tabular}



        };















        draw[->,cyan] ([yshift=.3cm,xshift=3cm]a.east) --+ (4,0) node[black,midway,above=.1cm] {Large $mathrm{L}_{H_3}$};





        draw[<-,cyan] ([yshift=-.1cm,xshift=1cm]a.east) --+ (9,0) node[text width=9.5cm,black,midway,below=.1cm] {Large $mathcal{T}_{4}= {M}_{2} || sigma({M_{2}}) || M_{4}||Z_{H_{4}}(M_{3})  || Z_{H_{4}}(M_{4} )$  };













        node[right=9.4 of a,yellow!70!black, yshift=-.7cm,xshift=1.4cm] (b) {Largetextcolor{black}{$H_4$}};







        node[right=8.3 of a] (b) (russell) at (4.1,0)

        {includegraphics[width=1.4cm]{Figures/R}};





            node[right=0.01 of b] (c) {

                Large

                begin{tabular}{l}

                point Verifies $mathrm{L}_{H_3}$ and execution  \

            point Verifies $G_{mathcal{T}_{3}}$ \

            point Determine $Z_{H_{4}}(M_{2})$ \

            point Determine $sigma({M_{{2}}})$ \

            point Generates  $M_{4}={Mx^{4}_{v_{1}} || (t_{1}, Max_{H_{1}}) || (t_{2}, Max_{H_{2}} ) || (t_{3}, Max_{H_{3}} || (t_{4}, Max_{H_{4}})}$ \

            point Determine $Z_{H_{4}}(M_{3})$ \

            point Determine $Z_{H_{4}}(M_{4})$\

                end{tabular}

            };



        end{scope}









        end{tikzpicture}

        end{document}