Tips to go from Mythic - Mythical Honour

I have 675 ranked games played in Total and my highest rank so far is Mythic with 15 stars. I play gold lane more than any other lane but recently I’ve decided to Roam and Mid lane because gold in this meta is too reliant on the team and in solo Q that’s an issue 💀 My games have been going a little better because of this.

And yeah im solo Q pretty much 95% of the time. Any help would be great ❤️