If you are beginner in Linux, try beginner-friendly Arch-based distro: EndeavourOS, CachyOS, Manjaro

You can learn Arch without too much hassle while using one of them

When DB is RDS it is more convenient, why not? But, depending on needs, there could be databases not in RDS and you use traditional methods to backup them.

Cryptpad still doesn’t support rclone file transfer or at least WebDAV? Was waiting for this for ages…