My toenails are NASTY as in thick yellow things with nail fungus. If you've ever seen the movie, Worlds Fastest Indian, there is a scene where “Burt”/Anthony Hopkins is trimming his nail with a drill and a grinding stone so he can get his shoes on. It was always a standing joke that was me with my nails.
I'm keeping an eye to see if they improve.
If you haven't seen this movie, I recommend it. Link to trailer attached.
https://www.imdb.com/title/tt0412080/