How easy it is to sell a game?

Hello, devs

I have been working on a game and I plan to publish it sometime in the future on steam.  I would like to know if there are any "barriers to entry" for a solo developer from publishing a game or it is just simple as making a store page and selling it.

Thank you

These site might help

Steam
https://partner.steamgames.com/doc/store/releasing#2

Windows Store

if it is for andriod then you should propley quit
im making an andriod game right now and it is so hard to export and puplish andriod games
if it is for pc it is going to be easy for you
i recomend to puplish ure game on steam or epic
good luck