If you assume everything is compromised, there is no safety. You have to trust something at some point.
Usually, speaking from a professional IT perspective, people trust encryption. Once you do that, it does not matter how safe or unsafe the place where you store your data is.
AES, the encryption standard used by pretty much everything, is safe. It has not been weakened in any meaningful way since its inception and is also quantum - safe.
You could use for example openssl or Veracrypt or even just 7zip to encrypt it. If you don’t trust these tools, encrypt it twice with two different ones, just put a txt file next to it with the exact steps to decrypt, because you will forget in which order you have done things.
Personally I have a homeserver that is encrypted at rest and then it uses restic to store encrypted backups in the cloud.
Here is how I would diagnose (I’m assuming you have Linux / WSL on a client)
dig $domain
check which server answereddig a $domain
should give a recorddig a $domain @server
to make sure you’re querying the right serverIf none work, probably network issue (DNS boind to wrong IP, firewall, etc)
If 3 and 5 work but 4 doesn’t, your DNS isn’t authorative.
If only 5 works DNS settings on the client is wrong.