if by not playing to win you just mean full int like literally playing to lose, it's easily yoru or omen, just spam shit and tp into the middle of no where then pray u dont die xd
If you're just looking to mess around and try some crazy shit with no care of whether you win or lose, jett is extremely entertaining because of the movement
All duelists are fun also I find sage fun to play when my aim is good because people are always mad when they die across the map to a sage named “epicgamer123”