Making League a more enjoyable game to play

I've been playing league for about 4 years now and the basic system of how to play hasn't changed. But what has come to light for me recently is how one sided the game can be if you or the other team has one player who isn't very good/slacking. The game is solely based on the fact that if you have a better 5 man team than the other team you will win, even in high elo do we see this. I haven't been able to grind elo because every time I get up to 80-90s LP there always seems to be players on my team that decides to feed and play the game poorly. The only suggestion that I can make to make this game better, is that if there is one player who is not very strong or is feeding, that you can still win a game. there have been very few instances where I have won 4v5 and those are just based on the fact that the other team dost know what to do when they get so far ahead, leaving room for my team to take a victory. grinding in low elo should be easier, for example, making the system in Bronze and Silver only have you reach 50lp between ranks is a good way to help your players. every change in league seems to only be for the higher elo players, by putting in the 50LP limit in Bronze and Silver divisions, it allows players actually want to fight to reach the top, instead of reaching the top then losing multiple games in a row, leading back to where you started. I wish I could say I enjoyed league like I did in season 4, but the game just frustrates me so much to the point where I don't really want to recommend this game because I know how angry I get at it. league just isn't the same for low elo players, I just hope that riot can do something about it, berceuse I really do want to play this game.