be mindful of what info you want out of instagram before opening it. open it, get what you were looking for and get out. dont let it suck you in. turn off notifications. maybe install it in the work profile (if you use android) and leave the profile disabled when youre not using it.
i try to only open it once a week, like i do with my personal email. otherwise i get sucked into it when i procrastinate. but i admit i mostly rely on some friends finding out about local events.
i do backups of my home folder with Vorta, tha uses borg in the backend. I never tried restic, but borg is the first incremental backup utility i tried that doesnt increase the backup size when i move or rename a file. I was using backintime before to backup 500gb on a 750gb drive and if I moved 300gb to a different folder, it would try to copy those 300gb again onto the backup drive and fail for lack of storage, while borg handles it beautifully.
as an offsite solution, i use syncthing to mirror my files to a pc at my fathers house that is turned on just once in a while to save power and disc longevity.