What piece of wisdom about life are you able to provide others?
I’ll go first
You can do it alone but you’ll run into problems. Others that have been through it have solved those problems. Ask around if you recognize a problem and you’ll most likely receive the best solution
The 3-2-1 backup strategy simply states that you should have 3 copies of your data (your production data and 2 backup copies) on two different media (disk and tape) with one copy off-site for disaster recovery.
"Disk and tape" is a bit outdated, but you get the gist. A good strategy could be your main computer, your phone, some cloud drive (so it's in another location).