How to quit tf2?

before i was raiging in casual trying to aquaire a golden contracker, later because get ban on servers just because spamming medic, now because this game is dead and we got no more updates with new guns like was in the past. how to deal with it? how a man even can quit this game if this games was with him all life along, since late 2000-th and to now? How to quit gaming, tell your experience please