First of all it is okay, Chill. there are millions of videos like this on the internet itna mat darr you are just 19 take a deep breath don’t overthink about this shit.
and, Put up a story that someone edited that and blackmailing you – This everyone have suggested you that already Deepfake.
and delete your account asap and you may join after a while by this that person will not have access to your friends. and even after all this she reaches you out through other ways then file a complaint.