Just saw a Steve mould YT short: every time you sharpen a pencil, you're at best removing 2/3 of the lead so that you can use 1/3 of it to write. At worst, your removing like 9/10 of the pencil
You can search for them, but I think the one I have is similar to a Uni Kuru Toga pencil. I don't write as much as I used to, but it's awesome for taking notes.