I stand bare naked (except for my gaming headset of course) in front of the screen. this allows the vibrations from my dual 10 x 6 foot speakers to be felt on ever inch of my body, truly enchanting the animal crossing experience.
Desk, because you need to be close to the game to have the level of focus and precision needed to play well
Depends on the game tbh. i play alot of nba 2k21 myteam and i sit in a gaming chair pretty close to the tv
anything else though, like resident evil village or other single player games, i sit on the couch