This problem usually has to be faced by many users, I have given some solutions below, please follow it:

Solutions:

Restart the phone, then check whether your problem is fixed or not.
Then Turn on and Turn Off Flight Mode.
Reset the default Phone App Preferences.
Make sure to Check the Do Not Disturb mode.

A lagging or Slowly User interface on your Redmi Note 10 Pro

If you use any type of antivirus app on your smartphone or use any junk cleaning app, then uninstall it.
One thing is universal: when is the phone slow? In 90% of the cases, if your internal storage is Running out or has come to an end, then your smartphone will be slow. So simply free some storage, and your Redmi Note 10 Pro phone will be back to normal.
Simply uninstall the app you don’t use.
Use the Fast Class 10 Micro SD card on your phone.
Sometimes using a custom theme on the phone makes the phone slow.

If you use the Third Party Launcher, then this may be the cause of this problem. You should uninstall the Third Party Launcher and use the System Launcher.
Use the lite version application like Facebook Lite, Twitter Lite, YouTube Go, etc.
Update your phone to the latest OS available.
Update all your apps whenever an update is available in the Play Store.
Following all these steps, if you feel that your phone is still slow, then you try Hard Reset your phone.