https://github.com/nodrm/DeDRM_tools is just the first one that pops up. Theres a LOT of software out there that does this. I would recommend getting a copy as GitHub has been going after “grey” repos for a bit once they are discovered (see switch emulation and the many fan games).

Most of the time, I personally just avoid by going to publishers that dont lock down books. They make things much easier than Amazon.