Hi there!
I build my project with either Windows or mobile in mind. However, and for example, this one was made for PC but I added a mobile version of it to expand the user base. This one is primarily a mobile game, but I built it for PC as well.
Browser is a must-have on itch.io. I personally wouldn't download anything from here but if a game has a browser build then I would go for it. Take the second example in which I built for Windows, Android, and HTML5 (web). In the browser version I also have an option to choose between mobile and PC. Another plus of browser is that iOS and Mac devices can also play on it.
Speaking of iOS and Mac, Apple charges a $25 USD (this is an estimate, don't quote me (I also think it's per-year but not sure)) fee for being an "Apple Developer." If you're planning to release a high-budget game, go for it, but when I'm making games for game jams I don't feel the need to pay that.
About console I have no idea. I have a general sense that someone who buys a switch is more likely to play AAA games rather than hobby/indie games.
Keep in mind that this is my personal preference. I use a Windows PC (which actually means I wouldn't be able to build the game even if I wanted to) and Unity (which has basically every option of platform - really easy to build for browser or Android).
Hope this helps