Hello, here are some previous threads you might find of interest while you wait for an answer.
in this thread Toptomcat mentions that in ancient Greece nail clipping may have been done by the same person who cut your hair with specialized tools.
https://www.reddit.com/r/AskHistorians/comments/4px0bd/did_everyone_bite_their_nails_before_nail/
in this thread sunagainstgold gives a good insight into what tools were available in several ancient parts of europe. Biting is referenced in both threads.