Really coaching tends to be like 100+ USD per hour, but really until diamond you don't need personal coaching, you need just need basic understanding of mechanics and builds and so on.
Just watch high elo streams and actually play.
After a quick glance at your op.gg, two things jump out to me as points to focus on. First off, you play way way way too many champions. Play a small pool of maybe a half dozen champs if even, and stick to them until you're decent at them, not a whopping 70 distinct champs in ranked. Secondly, your cs/min is consistently pretty low, so drill yourself on that if you're serious about playing at a high level. Like go into a practice game, and just cs for a few hours until it's second nature to you and you can reliably get 90%+ of all cs, if not all of it, which is very possible when by yourself and not dealing with enemy harass/ganks and so on.