In my modest opinion, Gozo, you played really well, but as DerEchte pointed out in a different language from what I will use, you haven't played enough TT to understand and appreciate the limitations of your technique and athleticism as you try to hit the ball so hard it doesn't come back and when it does, you are not in position for the next ball. You really need to play a brush spin game where you hope that your opponent will be troubled by the quality of your rotation for a few reasons:
1) It gives you time to watch the play evolve and reduces the demands on your athleticism.
2) It makes opponents who aren't used to it hesitate.
3) It makes you more consistent and doesn't require extreme movement.
Your current approach is too flat and requires too much upper arm usage to get power. The speed of the game puts too much pressure on your movement. In the second game, your opponent made some good spin shots. You made one or two in the match, but I still think that you probably hit that ball too hard and didn't focus enough on rotation.
I remember when I first started play, my late great coach used to tell me to stop hitting the ball so hard that I didn't want opponents to touch it, that a time would come when when I would hit the ball right to where a certain level of player was waiting for the ball and they would miss it completely regardless. He used to tell me that Timo Boll would loop the ball to me, not away from me, because he had no fear that I would do something he couldn't handle and his spin would lead to my missing every block. This is exactly how you should try and build your game, I just hope you have the right coach to teach you this style. Trying to hit the ball as hard as you can when the opportunity arises is a rookie TT mistake that prevents you from developing the ability to hit the ball with easy power. Unfortunately, some coaches think this approach is bad because they think it builds bad habits for the higher levels so they train most young learners to hit with power. I disagree for a few reasons, I think this is the best way to play and learn and that you can add power later by making certain contacts thicker. I agree that the brush spin game is not as effective with the new ball, but where I disagree is that I don't think there is any serious alternative for an adult learner to get better. All the other approaches require too much effort and have too much risk/training tied to them.
The biggest thing I think you need to learn to do is relax and whip your wrist (not with effort or to cause yourself wrist problems, but by finding out how to play strokes and serves that feel like you are tossing a frisbee or hammering a nail or slashing a rope with a sword). If you don't feel that your grip enables you to toss your racket like a frisbee on both forehand and backhand, especially on backhand, then your racket grip is costing you a lot of racket head speed and is probably too stiff/tight. You don't have to use that extra degree of motion consciously, but it has to exist as a backup for more speed. Usually, when you have that degree of freedom you miss a lot in the beginning and that is when practice teaches you to control it. When I look at your game, a lot of your serves are too stiff and don't let the wrist move.
The next thing is to resist the temptation to hit any ball with power and to focus exclusively on getting as much rotation as you can on every stroke. When you serve, try to get as much backspin as possible.
When you topspin, don't try to flatten out the ball or hit the ball through the table, just try to make the ball rotate as much as possible. This is the fastest way for an adult learner to improve. When you get more rotation and less pace, a lot of what I am saying will make more sense to you. You will be able to control and frustrate opponents more and you will be able to get balls to block and not feel rushed by the action.
Start slow, focus on brushing/turning/rotating the ball. Avoid flat/hard contact. Master spin timing. It is the fastest way for an adult to master and improve in TT. If you manage to do it with your serves, then transfer that feeling to all your strokes. I repeat, it is the fastest way for an adult learner to improve in TT.
