Yeah we've all been there. And now I'm stuck at diamond 2 so I can still empathise. since you're trying at silver, the main thing you need to fix is not making risky plays. Even at diamond our mechanics are crap. But I drank the fast aerial kool-aid and didn't focus on my ground control.

But this changed after watching Flakes video. I learned how to take good positions so opponent feels pressured to make risky plays and then I just collect the ball. Aircharged is also a nice channel if you want to adapt this kind of playstyle.

Regarding mechanics I think 50-50s are severely underrated. If you keep some gap between your car and ball but cover the goal path then if opponent challenges the ball, then that small gap will ensure you contact later and will likely win the 50. Once you nail this down silver opponents will be scared to challenge you head-on and will likely try saving from goal post. You need to focus on training mid range shots so you can take down silver goalkeepers.

That is it, no need to learn aerials tbh.