Context: I've been playing for two years(16 years old now) and have always fealt I was in a good spot to continue growing and improving. Forehand was good, Backhand was good and my served were fine. They weren't impressive and fast but virtually always got in(wasn't neccesarily a "just get it in" serve). I knew there was improvement to be done, especially because my index knuckle was resting on the lining between bevel 2 and bevel 3. Kinda leaning more towards the Eastern Grip
I was content until a month ago when I got back from a 2 week break. Obviously I was rusty in all areas but I managed to get my Forehand and Backhand to be even better than before my break. The only thing is that my serve has gotten worse significantly. Theres only been a few days where almost all of them go in but majority of the days they just dont.
I've been receiving coaching since I started, Monday and Thursday per week. He mainly says I need to pronate. So as I'm about to hit the ball with the frame of my racket, I have to quickly snap my wrist at the last moment. The problem is that I'm somehow always in that "snap your wrist" position. No matter how many times I shadow practice, when I'm actually serving, I can never naturally get my racket to almost hit the ball with the frame and snap with my wrist. I've watched YouTube videos and even recorded myself serving. Nothing is working out.
I've never had as much as fun with any sport as I did with tennis, so it really feels demotivating when I'm suddenly so bad despite serving 100 times for each 5 days a week I practice myself. I've always wanted to make 1st team and now I never see that happening. Especially when I see my peers hitting balls at mach 10 perfectly.
Sorry for the long complaint. I'm just hoping someone's been through what I'm currently going through and has massively improved. Any tips?