PC mainly, but a couple months ago I got a Steamdeck, and I can now play from the couch on the TV.
I've wanted to be able to play from the couch for a long time, but I did not want a PC on the TV, so this is a very good option.
I can play casually and also play coop sometimes easily.
Most importantly, I don't have to be in my "office" room, since I work from home, it is good to be away from the room I am all day working on.
Sadly tildes is invite only it seems.