It is normal. Tennis needs a lot of wrists, and wrist injuries are normal. Being normal doesn't mean you don't care. If it hurts frequently, you'd better change to a softer and lighter racket to strengthen your wrist strength. I read in a magazine that it is very useful to hold it by hand.

In addition, it is necessary to strengthen wrist relaxation, gently rub wrist tendons after playing, and do not massage muscle abdomen, which is not effective. Besides, it's useless to wipe your wrists upstairs. It's a towel. It's the same thing as a sweat towel. Is the sweat towel to protect the head? If you want protection, you should use a medical wristband.

Also, the hitting point may be really inaccurate. There is nothing good, just practice.

There's nothing irregular about the movements, just like professional athletes brushing their teeth and hurting their wrists, but they still need to practice. If it really hurts, you should call a doctor to prevent tenosynovitis.