redmi note 9 pro

I want to install screen protector for my mobile but I am afraid if it goes wrong (like misalignment or air bubbles or if a liquid spills on it) it will become waste (it can happen if I ask anyone else as well). So are there screen protectors/tempered glasses which can be reused?

The status bar is supposed to be as shown in the 1st image. But somehow it gets wrongly aligned to the bottom. When I reboot the device, for a while it stays correct for some time as in image 1. I can't post the issue in Mi community as it is blocked. How do I report this issue & my feedbacks...