Back when I wasted money on games, I bought shit like Garry’s Mod, PUBG, Rust, etc. because I knew some people who played it and thought we could play together.
It never happened.
So they’re collecting dust in my library and now I only play single player games
I am, to my shame, very often the "other friend" in this situation. I just don't like multiplayer that much, my best friend will pump me up to play one with them, and - with a few exceptions, Valheim comes to mind - we don't even play it because in the end I really dislike both MP and voice chat and I've just discovered a new RPG or started Stardew, ONI, Anno, or Dyson Sphere Program once again.
I feel guilty about it.