The most important thing in our amateur tennis is not the physical quality, but the feeling of hitting the ball and the coordination of the body. If the movements are done well, we can play well without much effort.

If you want to improve your practice quickly, you'd better find a better person to help you practice. You don't need a master, just let you take fewer detours. When I first learned, my speed of improvement was many times slower than that of no one. After I could hit the ball, I was on my own. He feeds the ball to you in front of the net, or throws it to you at the side, and corrects your movements at the same time, making rapid progress.

If no one teaches you, you must always have a partner to learn the ball with. You can also hit the ball to the other side and hit 60 to 100 balls in a row, which is better than hitting 1 hour without hitting a few balls.

I hope the answer will help you.