So here is the footage of my training session. (Im the taller asian guy)
In this session I didn´t feel like im having those Topspin issues.
I felt like I´m loosing control while playing as you might see in this footage.
Btw. pls dont judge me

The first time I see myself playing
If you see something I´m doing wrong or something I can improve on feel free to tell me
Thank you in Advance
First thing I am going to say is, one thing you are doing right is that most of the time you get pretty nice spin. When you fix the followthrough on your FH, that will increase. But your touch is good.
Two things you can work on to improve very easily:
1) Return of serve.
2) FH followthrough.
1) For practicing return of serve there is something simple that will help you. You are naturally gifted and learn fast. If you are only playing for 9 months, you really are playing quite well.
Just have a few different people serve to you over and over again. Play out the points. But focus on the return of serve. Have them serve as though they are trying to win the point whether that means the serve wins the point or that they set you up for their third ball. Practice that drill for a decent amount of time. It will help your level improve.
2) Your FH followthrough is inconsistent. The good news is that this is because you are trying to adjust to each separate ball. The bad news is, the followthrough really should still be consistent. Ultimately, you should adjust to each separate ball and the stroke and followthrough should still be consistent.
One thing that could help: Shadow Strokes. If I was you, I would do these in front of a mirror so you can see and hopefully correct your form so the followthrough is complete, and the reset is fast.
You should do a decent amount of FH shadow strokes and BH shadow strokes. FH may be more important for you right now. But both will be useful.
If you did about 3000 FH (approx 30 min) and 3000 BH (approx 30 min) shadow strokes 3-4 times between now and next Monday, my money says your stroke will improve a certain amount without any other instruction. If you got a decent TT coach to show you what that shadow stroke should look like, beforehand, it will improve a noticeable amount more. But you may not need that part.
With the shadow strokes, just simple, loop, loop, loop, loop....as though someone very precise keeps blocking back to the same location for you.
After you have done that 3-4 times, you could start adding footwork to it to make it more fun.
Here is footage of shadow stroke + footwork:
Sorry. I don't have footage of just the stroke without the footwork. But both will help.
After that. A little time with a coach could really help. If you get the mechanics of a good stroke into muscle memory first and then take 2-4 lessons, your level will jump.
If your receive of serve improves, you will Jump even more. But you are doing the most important thing well. You have good touch and contact for spinning the ball.
Sent from The Subterranean Workshop by Telepathy