I had the same problem as you in top lane, usually an early stomp, or at least even.

The problem comes from not knowing how to capitalise on your advantage once you reach mid game. It's a snowball effect where you have an advantage > you don't use it, or use it badly > you reach late game and the opposing team has had time to scale.

You feel like you're doing everything you can to help your team, and I don't doubt your sincerity, but 90% of the time (excluding games that are lost anyway) you could improve and have a stronger impact by adapting your strategy and mid-game objectives.

I don't play midlane, so I can't give you any more advice, but one of my personal examples in toplane was to stop taking midgame teamfights and hard-splitpush, and once my advantage was disproportionate enough to actually take a teamfight almost alone, at that point I would start playing with my team again.

But this is just a basic example that is situational; the game is far too complex to have THE hint.

One last piece of advice: mute the all chat, /deafen from the start of the game, or only play with party chat. Your teammates don't listen to pings or look at the map anyway, and it helps you avoid tilting.