I've been waffling on whether to rely on flash drives (sticks) or a 500 GB Sandisk external drive and Time Machine to backup files. I do back ups only about every couple of months to my laptop. I may have just a couple of documents and/or photos that are copied to USB 3 drive (thumb, stick) on my Dell. It is easy and no special program like Time Machine needs to be involved so I'm thinking if the MacBook will at least do that so I may not use the Time Machine. It sounds like a pro user device for everyday back up, keeping its big drive connected. I think I can get my OS onto one USB C flash drive and my files to another stick then if I need to reinstall, I will wipe the Mac clean then set it all up again as if it were new...install apps, make settings etc. I had thought Time Machine backed up the whole shebang...OS, settings, updates, and personal files making a mirror image of whatever is on your internal SSD to restore if necessary. A member here said nope...does not do that. I won't pay a fee to the cloud so that is out. I guess a couple of USB C 32 GB flash drives will do it. Create a recovery one, then drag and drop file copies to the other.