where can i purchase logic pro x?

I got a MacBook Pro (2015) a few years ago from a lady whose husband died...he was the Mac user. Logic Pro X was already installed. Several month ago, I had an issue with the software and couldn't open any of my music files. After researching and trying numerous things on the internet/YouTube, it was suggested that I try deleting and reinstalling it. After deleting it, I discovered that I could not reinstall it because it was registered to the original owner who is now deceased.

I finally decided that I would just purchase the DAW myself, that way if I had any issues with it, it would be mine and I could get any support I needed with no problem......so I thought. I went to purchase it yesterday and found that Logic Pro X is now Logic Pro and requires macOS 13.5 or later. The latest OS for my laptop is 12.7.5. So my question is "Where can I purchase Logic Pro X from so I can get back to music production?" Or are there any other suggestions/options? I have Studio One but would much rather use Logic because that's the DAW I learned on.