Compound Clip Media Offline

Hello. My name is Felipe I'm 14 yo and I make drum videos. I'm new to Davinci and it's really good except for the fact that there's this problem that keeps happening when some of my media says "media offline." I know I can just relink the clips, but a few of my compound clips have this issue and I can't relink them. I right-clicked them and the drop down menu doesn't show this option. I also have very organized storage so I don't know what the problem is. Does anyone know how to solve this issue or how I can prevent it from happening again?