\documentclass[border=0.2cm]{standalone}
\usepackage{tikz}
\usetikzlibrary{automata, arrows.meta, positioning}
\usetikzlibrary{decorations.pathreplacing,calligraphy}
\begin{document}
\begin{tikzpicture} [node distance = 3cm, on grid, auto]
\node (q0) [state, initial text = {}] {$q_1$};
\node (q1) [state, right = 2 of q0, draw opacity=0] {$...$};
\node (q2) [state, right = 2 of q1] {$q_s$};
\node (q3) [state, right = 2 of q2, draw opacity=0] {$...$};
\node (q4) [state, right = 2 of q3] {$q_t$};
\node (q5) [state, right = 2 of q4, draw opacity=0] {$...$};
\node (q6) [state, accepting, right = 2cm of q5] {$q_m$};
\path [-stealth]
    (q0) edge node {}   (q1)
    (q4) edge [bend right] node {}   (q2)
    (q1) edge node {}   (q2)
    (q2) edge node {}   (q3)
    (q3) edge node {}   (q4)
    (q4) edge node {}   (q5)
    (q5) edge node {}   (q6);

\draw [decorate,
    decoration = {brace,mirror}] (0.5,-0.75) --  (3.5,-0.75)
    node[pos=0,below=17pt,align=center,anchor=south,black,midway]{$u$};;;
\draw [decorate,
    decoration = {brace,mirror}] (4.5,-0.75) --  (7.5,-0.75)
    node[pos=0,below=17pt,align=center,anchor=south,black,midway]{$v^i$};
\draw [decorate,
    decoration = {brace,mirror}] (8.5,-0.75) --  (11.5,-0.75)
    node[pos=0,below=17pt,align=center,anchor=south,black,midway]{$w$};;
    
\end{tikzpicture}
\end{document}