Can't ID Protection..reads No DVD

When I insert the DVD to copy( my daughters wedding), it appears to my player no DVD is inserted. So how can I find the protection if it isn’t there???
I just want a copy of the DVD the videographer made for my daughters wedding.
I tried CLONE DVD, Tried Alcohol 120(might be missing a seup in this one)
I feel so dumb sometimes… I know I am missing something easy
TIA