You’re paying for the air you breathe? Lots of things are free. Capitalists who want you to pay for what you shouldn’t will try to convince you otherwise.
Synology NAS here also, divided into private (family stuff, docker volumes etc) and public (Linux ISOs and anything that can be redownloaded). Both get backed up weekly to an older NAS with Hyper Backup. Private additionally goes onto a LUKS encrypted drive monthly which is spot-checked, taken offsite, and the previous offsite drive brought back. I don't back up any PC (don't care, just reinstall) or phones (they are backed up on iCloud).
Yep, one free and one paid app I have used for a while recently moved previously entitled functionality behind subscription paywalls. Serves me right. Will stick to libre apps from here and suffer that way instead.
"I'll haaave a beer-a"