How does Tik Tok close private information?

Tik Tok is troubled by private information. How can we close it? The method is as follows, I hope it will help you:

Mobile phone: iPhone 13(iOS 15.4)

Software: Tik Tok (22.9.0)

Step 1: Open Tik Tok and click more options in the upper right corner of my interface.

Step 2: Click Settings.

Step 3: Click Privacy Settings.

Step 4: Click on the private message.

Step 5: Turn off all functions and never receive private messages again.