Having fun in league is RNG

It all feels like a big fucking coin flip, in one game you get completely stomped, your entire team plays bad and you can't do anything. The next game everyone on your team is playing well and seems to coordinate with each other and get an easy win, and 1 out of every 50 games you get a game which has you on your toes, both teams are equal in skill and coordination and game lasts for over 40 minutes where 1 fight decides everything. I want all my games to be like that but it's just so rare to get them this days I sometimes stare at my desktop looking at the league icon thinking about having a good game, but knowing the sad reality that its most probably going to be just another typical toxic stomp stops me from playing most of the time