Apologies if this is one of those annoying questions but I noticed a comment a while back "not time machine".
I have iCloud backing up my phone and my email, documents and work photos from my mac book.
I also backup (periodically) to a hard drive that has Time Machine and some other storage folders. I archive (mothball) the time machine drives about every two-ish years and start a fresh one. This does waste space but it means that there are multiple copies data across the drives. I've never managed to copy the backup files so each new drive starts completely fresh.
I travel a lot and most of my work only exists digitally so a reliable backup is essential.
This has worked for me so far, please feel free to tell me what I'm doing wrong...