I had backblaze, and it’s really a bummer they don’t support linux. The closest one I’ve found is Icedrive, but it costs a bit more. I don’t mind paying a bit more though for a FOSS solution (technially not free but yeah). I probably only have 2 TB of actual important stuff but it would be nice to have more for future.
I had a look at some of the more recommended options out there and decided to invest my money in physical storage instead. I know this is not the answer you are looking for, but it makes more sense in my use case.