Yes but switching distro you can fuck up some settings… Better to copy documents downloads etc but all the hidden directories I do it selectively

yup, but careful with hidden folder like .config and a few others

Sure you can burn a CD, but I think I have nothing to play them anymore. My car (2020) does not have a CD player anymore. Nor my PC nor my laptop have one. I may have in my drawer an old BD reader DVD burner/reader with a SATA plug or something, I remember I plugged it on my laptop with a USB adapter yearsssss ago to rip my LOTR BD. It has been used 1 time in like 10 years.