I tried to draw three circles aligned together.
\documentclass[tikz,border=2mm]{standalone}
\usetikzlibrary{positioning, decorations.text}
\begin{document}
\begin{tikzpicture}
\node[circle, minimum size=8cm, draw, fill=pink,anchor=west] (a) {ppou};
\node[circle, minimum size=6cm, draw, fill=green, anchor=west] (b) {oooo};
\node[circle, minimum size=3.6cm, draw, fill=orange, anchor=west] (c) {Inner Market};
\draw [decorate, decoration={text along path, } ] (0:7) arc (30:-70:5.5cm);
\draw [decorate, decoration={text along path, text = Private Market } ] (0:4.5) arc (-0:-60:4.6cm);
\draw [decorate, decoration={text along path, text = Total Market}] (0:6.7) arc (0:-90:6cm);
\end{tikzpicture}
\end{document}
How could I better align the text in the outer and middle circle to make it looks better?
