I’d also recommend vatsim. It’s completely free and you only need to install one small addon which acts as a radio, among other things, and “plugs in” to the sim via dark magic.
Yes, it is intimidating when you have no formal training. I used it with fsx 9 years ago and went through their vfr and part of the ifr course. Since then they have created a network of virtual pilot training websites (also free) where you can get your virtual pilots license. Most of it is just reading the assigned pages from the faa manuals. Because I had registered so long ago, I already had a “P0” rating which allows me to be on vatsim. I’m not 100% sure how it works to get a “P0” now, but I think it’s a quick read and a short quiz over the material. Someone else can clarify on this I’m sure.
Anyway, I’ve combined OnAir with Vatsim and am really loving vfr’ing around in the 172 making virtual money and paying virtual bills.