Still suck after 2 years of playing

Hello everyone!

So I started playing League of Legends at mid season 6, I stopped playing league of legends for few months then joined again..left the game..and played again so I would say I played approximately 15 months of league of legends. When I played ranked for the first time I got placed on Silver 5 and immediately I fell to 0 lp and got demoted to b5 (Not because my team afk or my team troll or my jg suks; its because I suk). I watched alot of videos about how to get better and how to improve and watched ALOT I mean like seriously ALOT of neace coaching video and tried to apply what I watched in game, and still suked. When I see like high plat / low diamond players play in bronze silver or gold they get like 40/9 and solo carry the game even with feeders or trollers. Gold is considered easy and low elo and if someone is gold after 2 years of playing pro players be like wtf are u still playing league of legends if ur still gold after 2 years. So what I mean a good player will always be good even with trollers. So I was wondering if some high elo player could actually help me like in game or smth.

Server: eune Ign: fireslxys

Tl;dr I played league of legends alot and I still suk I need someone to help/coach me