Why would a new player stay?

I decided to test this after a friend told me that early levels are literally only smurfs, my gosh it's true. I'm not sure if i got smurf detected or what exactly but straight out of bots literally all 10 players are smurfs, i was gold 3, not that great at the game right, but some players here are obviously plat + really good at the game, doing God only knows what at this rank, i'm like lvl 7 right now on this acc. I'm here trying to get a friend use to the mechanics of the game now that he is able to beat bots, i figured we could lane together and i could teach him but it's just not possible, every player not only is a smurf but they expect people who just learned how to play to do well in PVP against other smurfs, he obviously had no fun getting wrecked by the try hard yasuo and even worse getting utterly shit talked every single game, the dude can't seem to get a match with people from hes actual level... Could this be why league is losing players? the old players are tired of bad game balance and the new ones who try to join can't learn/lose interest because there is always a team of smurfs wrecking them or shit talking all game