I have a feeling, the only real issue listed that was actually central was that you looped as early as possible.
This is actually an issue I have seen and said in some older videos of you playing. Getting used to looping the first ball you can, when you are playing (particularly practice matches) would be worth it for you regardless of the opponent. So, looping on the opponent's serves and looping on the opponent's return of your serves would be worth getting used to.
It may not be what you always do tactically against good players. But being able to pull the trigger as early in a rally as possible would mean you are ready for anything so that, when you choose to let the pushing happen for longer before the opening occurs, it is because you chose that tactically and, perhaps it is even a surprise to your opponent that you are not opening at the first chance.
Even when your opponent opens first, if you are able to re-loop (counterloop) instead of blocking (which you are already excellent at), that would also give you additional skills that it would be worth working on; and when you get used to those kinds of things, you will play better against higher level players.
I am talking from memory. But my memory is, you like to to push and wait for the opponent to open, or for an easy ball to open on. When your opponent opens, you like to block and wait till you get a safe ball to loop against and take control of the rally or win the rally. Your blocking is really solid and a lot of the guys I have seen you post video of, when they are looping at you, you are kind of like a wall and everything comes back, and then you get one loose ball and start looping and your loops have good spin so that gives your opponents trouble after the relatively low spin of the blocks. Making it second nature that attack that first ball that comes to you (almost no matter what comes to you), to open with a loop would increase your skills. When your opponent opens with loop, working on counterlooping that first loop would also add to your skill set. I could be wrong since it has been a while since I have seen footage of you play. But my memory is, you wait and let your opponents make the mistakes (play safe) a lot of the time. Again, there are times when that is just good tactics. But, having the skill to press your opponent with offense earlier would likely bring you up another few levels.
==
Still, if the change of rubber helped you have the CONFIDENCE to open as early as possible, it was fine. But that is the mental part. So, it would be worth playing practice matches with players like that one and forcing yourself to open as early as possible, while using your FH serves, and while using the equipment you would normally use. I think you will find those are not the issues you thought they were if you are mentally prepared to loop everything. And if you do it for a while, you will stop having the nerves associated with the mental framework of looping the first ball that comes to you no matter how challenging of a ball you get. And again, when you are comfortable with doing that, then pushing when your opponent is NOT expecting it can give you a much bigger tactical advantage.
Last thing: you may be able to get more spin on your FH serves, but I would put money on it that, if you wanted to REDUCE the amount of spin on your FH serves, YOU CAN. And learning how that gives you tactical advantages would also increase your GAME SKILL LEVEL. If you can show very heavy backspin (or any other kind of spin) on your serves, then the light spin and "no-spin" serves become very effective, ESPECIALLY if you can do the lighter spin serves with a decently high toss. And being set after a serve (FH or BH) should be part of the serve motion, so, if you have a harder time being set after FH serves, then you should be practicing your serves with the body motion that brings you into the ready position AS PART OF THE SERVE, since IT IS PART OF THE SERVE.
Watch any of the top players when they use a FH serve and how they use their body, legs, hips to rotate into the ball and the followthrough of that motion brings them directly into the ready position. If you are serving without doing that, that action would give your serves a decent amount more control (on length, depth, speed, placement) and an increased amount of spin or speed without the opponent seeing you use more effort.
