Solo everything is definitely happening. People are getting priced out, and the third place (https://en.wikipedia.org/wiki/Third_place) has pretty much disappeared everywhere.
Gen Z is considered the loneliest generation, and its easy to see why. COVID messed things up too, and there's a lot of kids and young adults that have not been properly socialized.
And since you have to spend, increasingly large amounts, of money just to go out with friends, people will just stay home instead. Maybe that looks like chatting on discord while playing a game together, but increasingly its looking like solo activities.