What you should do when tilted
This answer might seem weird, but I honestly think you should play support when tilted. Of course, this depends on what you play and if you can play it. However, for me, it seems like every time I go on a tilt spree and I play support, I dominate the game. I think play making supports are usually the best to get out of this tilt. I play blitz every time I'm on tilt and I hit around 90% of my hooks in lane (about 30% ish out of lane, but w/e). The point of playing support is the feeling that you get after landing a good hook or helping your carry get fed. Then you see the people you fed carry. This helps to give you hope for your future games. For anyone On a tilt spree, gl and try to untilt :).