It might be overkill and some sysadmin don’t like using them but Ubiquity with their Unifi model is all I’m using at home. USG as my router/firewall, 24-port 500w PoE switch, unifi cloud key for interface, and an AP-AC-Pro for WiFi access.

Backblaze on a B2 account. 0.005$ per gb. You pay for the storage you use. You pay for when you need to download your backup.

On my truenas server, it’s easy as pie to setup and easy as 🥧 to restore a backup when needed.