yes, the game is shit
The faster you realise that all League comprises of is a digital prison designed to make it very hard for you to progress to keep you in there as long as possible, the faster you can get over it.
I was never a good player, I peaked at like high plat MMR, but when I got an account banned and had a new one it took forever to get out of silver and gold and just isn't worth the time. It keeps you down so you just need to spend long amounts of time to climb, hundreds of games in fact for no reason other than to get you to play more
More time playing = more time to buy skins
thats their plan, and it works. Stop playing or play for fun only; thats my advice