I seem to have lost the ability to save documents as PDFs, which will be the topic of another question but which points to the problems with not running updates as they become available. The cost of a new Mac would be too much right now. I’m afraid of upgrading to Ventura because I’m doubtful my old machine will be able to handle it. I have often tried to rename the external drive, but my attempted backups still fail. I get a message telling me the backup failed because my two hard disks are named the same thing (but they actually have different names). I also have a Seagate 1 T drive that I use for backups, but ever since I began using that SSD for my operating system, I’ve been unable to save any backups. With the help of the community I resolved the issue by purchasing a 1 T G-Drive SSD and installing the operating system on it, leaving it attached at all times. Almost a year ago my 2018 desktop Mac was very slow after I upgraded to Monterey.