Oh, you mentioned you don’t want to keep a backup of the entire drive. That is fine, but absolutely back it up before starting the install.
I would just boot a live Linux image and dd the entire device file onto some sort of storage. That way you can get a bit for bit copy of the drive that you can make it how it was before you touched it. When all is well, then you can ditch the backup. It wouldn’t be a bad idea to keep if the stuff is important. Storage devices do fail.
But we couldn’t vote for Kamala because Gaza (Trump is worse), we didn’t get a choice in the primary (With an Incumbent president primaries are a mere formality), prices are too high (inflation had slowed and deflation makes inflation like a trip to Vegas/Disney/Tropica Island/whatever, and a gazillion other excuses. I can forgive someone for being misled for various legit excuses, but those that are in the know or propagated the manipulation, fuck you.