I feel like I am getting worse and worse at this game

I began playing last summer on my friend's playstation and absolutely loved the game. When I built my PC in December I play Rocket League non stop and learned so much and so quickly. The highest rank I got to was CE Div 5, sadly didn't quite make my rising star goal. Now I'm struggling in Gold 1 in 2s and Gold 2 in 3s. I was in Gold 3 for a while and playing well but now my own game play makes me cringe. I used to get so pumped when I scored a goal or did something cool. I used to learn something from every game but now I just get frustrated.

It makes me sad that I'm not improving and even sadder that the game I used to love just isn't that much fun for me anymore. I haven't been playing as much because of this. I want to get back into it but I can't seem to get back to my old mind set. I'll share my replays if someone wants to look at them and maybe help me out.

Has anyone else gone through this and how did you get out of it?

EDIT: Thank you guys for all the awesome advice! I'm going to go into normals for a bit and work on honing my skills.