Unsure what exactly you want to do, but this might be of help https://help.ubuntu.com/community/Partitioning/Home/Moving

I feel like its back and neck are also enlarged and rather “musley”

Maybe https://en.m.wikipedia.org/wiki/Myostatin-related_muscle_hypertrophy

Does installing python3-libevdev help?

If you are just listening to music “InnerTune” might be for you. Uses music.youtube.com in the back, without ads and able to run in the background. Available on F-Droid

Using Fusion360 in a Virtualbox, works okish for the few things I’m doing. There are several projects on GitHub for running it with Wine, but wasn’t able to get them working on my machine. Maybe not industry Standard, but I’m also using OpenSCAD from time to time for smaller things (especially when I want to publish them).