Copy Rights Of Garage Band Loops And Commercial Rights

I create my own music for my videos on Youtube using Garageband of Apple software. The loops are Free for commercial licenses. Sometimes, I was notified by Youtube team someone claimed copy rights on my music (create from scratch with Garageband loops), I disputed and they released the claims. I don’t know who really have time to check all these little pieces of music on the net. It’s troublesome and frustrating for me to dispute. The music must be really bad if it’s the same as my musical piece, why would anyone wants to even copy right such a bad song like mine… 🙄