Publishing on Steam is good. There is a lot of info and assets needed to fill a submission, so it takes a bit of time. I also think it is probably a bit confusing at first with setting up depots, keys, builds and what not, but it is OK if you follow the documentation. Done it one time, then it is easy. In comparison to itch it does take a lot more time to get done. With that said, if you consider possibility to sell games, you can most likely assume selling 10x what you do on any other platform.

I'm curious, why do you use the Opera GX site for the web build? Is there a benefit from doing so?