Looking for some advice

Okay, so before I start this post by thanking the riot team member who notified me where to repost this. Unfortunately it didn't give a specific name but thank you to whoever did.

I started playing league of legends during the late 3rd season I think. (I think it was a couple weeks before Bulwarks removal.) Since season 3 this game has become one of my favourite games and really don't want it to ever go away. Over the years I've watch this game go through changes and watch it evolve as game and community. I don't want to leave it but I'm finding myself playing worse and worse and feel like I'm beginning to lose more than I win. This game feels now much more difficult and complicated but I've made so many friends and had so much fun with this game that I really don't want to put this game down and never come back to it. I want help to get better at this game and grow as a playing and grow my skill and mechanics because now I can't rely on what I can do anymore. If there are videos to help or people willing to speak or converse with me I'd really be thankful for it.