You lost lane? Stop yelling "ff 15" like the game is over.
Because of course no one would like to help your lane that way.
No one would want to help the lane of a tilted Player because they think you are not worth helping.
You might not see it, but another lane is winning, so just sit tight, farm up, try to feed as little as possible and be as less of a burden on your team as you can.
Don't cry in chat and spam ping the jungler "?". Genuinely call for help and show your team you want to win this game.
You probably can't 1v1 any of the enemies because you are behind, so don't try. It will only make things worse.
Learn to get carried when you lose lane and you will win more games.
It's all mentality.