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?
If you are applying on your own, you will make mistakes first time. Even now I put it slightly misaligned at times. For glass, most of the times you can immediately pull it out back, then reapply.
It is possible to reuse them if you have made a mistake while applying but once applied and used for a while I doubt if it can be reused like brand new.