Fiat gates, maintained by the government in the name of fighting terrorism are asking for KYC, not #Bitcoin.
The privacy? You've received some sats here on #Nostr. What information do you have on the sender?
I'm not sure what country you're living in but I believe you're running a relay so I guess you're technically capable of using BISQ for example.
For more options, have a look at kycnot.me
In most cases, you're dealing with strangers, treat them as such, don't trust anyone.