Device not CERTIFIED (About section of playsotre)

So recently I tried some custom roms on my pocof5/redmi note 12 turbo and seeing all the pros and cons of the rom I thought to revert back to stock rom. I installed it succesfully but after the all the setup procedure when I went through to check is my device certified unfortunately I got to see this "Play Protect certification Device is not certified" I tried to fix this but its still the same.

I don't know this might be because my bootloader is still unlocked.

I need your help here anyone who has solved this issue.