Girl I know you probably don’t care but this is not good for your nails. I’m a cosmetologist and never file natural nails like that. Always go from side to middle. Never do it vigorously. There’s over 100 layers on a nail plate and when filed back and forth the layers start peeling off and not sticking together.
True for most people, but some of us naturally have indestructible claws for nails. Sad thing too, since I'm a fella, but my poor sister has nails like paper. Life's unfair sometimes. Oh, right, my point. Point is, you can see this lady also has thick, indestructible claws, so no worries about fraying. But for normal people nails you're absolutely right.