documentclass[tikz]{standalone}
usetikzlibrary{arrows.meta,bending}
begin{document}
begin{tikzpicture}[>={Stealth[flex]}]
node[circle,fill=black,inner sep=0pt,
      minimum size=4pt,label=below:0] (0) at (0,0) {};
node[circle,fill=black,inner sep=0pt,
      minimum size=4pt,label=below:1] (1) at (4,0) {};
draw[->] ([xshift=.5cm]0.east) -- ([xshift=-.5cm]1.west);
draw[->] (0.center)++(0,.35)++(-120:.35) arc (240:-60:.35);
draw[->] (1.center)++(0,.35)++(-120:.35) arc (240:-60:.35);
end{tikzpicture}
end{document}

documentclass[tikz]{standalone}
usetikzlibrary{arrows.meta,bending}
begin{document}
begin{tikzpicture}[>={Stealth[flex]}]
node[circle,fill=black,inner sep=0pt,
      minimum size=4pt,label=below:0] (0) at (0,0) {};
node[circle,fill=black,inner sep=0pt,
      minimum size=4pt,label=below:1] (1) at (4,0) {};
draw[->] ([xshift=.5cm]0.east) -- ([xshift=-.5cm]1.west);
draw[->] (0.center)++(0,.45)++(-120:.35) arc (240:-60:.35);
draw[->] (1.center)++(0,.45)++(-120:.35) arc (240:-60:.35);
end{tikzpicture}
end{document}