Got given a gift of podiatrist medical grade scissors (same exact ones our Dr uses). Had them for over 20 years and are excellent.

Similar style to this. Ask a podiatrist where they get theirs

Medical-Grade Toenail Clippers – Podiatrist's Nippers for Thick and Ingrown Nails https://www.amazon.com/dp/B017N5DMHM/ref=cm_sw_r_cp_api_i_9AHVCHSB5AZ6KFPYDC79?_encoding=UTF8&psc=1