genuinely need help in LoL
I'm level 30 in LoL as of now and I'm absolutely terrible. My winrate is around 36% and I have never ever carried a match in my whole entire time of playing league. I always get horrible KDAs and I have absolutely no clue on how to CS. I always get told to 'uninstall' or 'kill myself' because of this (every single match). I've played 4 out of the 10 placement matches so far and I have lost all 4 of them. I even main the easiest champ in the game, garen. And when I say main, it means I only play him and nobody else because I have no goddamn clue on how to play a mid laner or adc. Sure I have tried to play them but I always end up feeding and not being able to do anything at all. For the last 2 weeks, I don't remember a single time thinking to myself,'hey league is pretty fun!' I watch champion spotlights, youtubers, streamers that play my lane literally 24/7 and nothing seems to help. I am so bad to the point my friends don't even want to play with me anymore. I go to practice tool and try to understand the mechanics of my champion but nothing is actually working. I feel like I'm gonna lose every single match from now on and its just really an unpleasant situation. I don't care if its one single piece of advice or even a 'I don't think you should play league anymore' type of comment. I just really really need some advice. Thanks for reading this massive rant.