People who flame for being bad

I'm a new player I'm a bad player and I know it. I just want to have fun and an enjoyable-ish game. Every time I start a normal I get crap on because I'm bad and I once went 0/23 with Ashe because I have no idea how to play ADC. Sometimes I feed first blood and then one or two dudes on my team AFK or start flaming me and asking me to have a glass of bleach. Because of one death. That doesn't make me any better in any kind of way and I just keep on feeding, even though it's not "inting". Believe it. So I end up 0/6 with Garen because some genius thought "I'm gonna play ranged top" and my team doesn't get that. They so start flaming me and blaming me for anything bad that happens to them. Should I stop playing like i was told to, but how to i learn if i'm not allowed to play. Their answer was that i don't get to play this game. What should I do. Thanks for reading