Ever heard of camera footage basically "deleting itself"?

Ok so a good chunk of time is gone from my indoor camera footage. I fell asleep and I have this app locked on my phone that requires my fingerprint access. When I fell asleep, my camera footage was there because I activated the siren and I heard it from outside. I saw the inside of my apartment (I was locked out). When I woke up, 6 hours were magically missing. Never in the time I’ve had this camera has anything like this ever happened. I’d like to know if this has ever happened to anyone. Thanks!

Never happened to me. which Camera type are speaking of? You tagged this as Wyze-lock.

Do you have an SD Card in the camera, if so, check the footage there.