Corrupted harddrive?

Hi everyone, I just recently noticed that TWO of my hard drives were both missing and are not showing up on disk management either. After seeing some reddit posts and trying to troubleshoot it I figured it might be corrupted, so I then opened up my pc as my last resort, turns out one of the two got unplugged somehow but the other one is okay, still, I removed everything and plugged it back, booted up the PC and it showed again. Would you say the HDD might fail soon? or maybe it just got a bit loose?