For me.. I use coinos.io -On account setting page ... Go setting -Copy the hidden code -in alby --> wallet setting --> link your own wallet and paste the code from coinos. You're finished From now on... Every zap from nostr will direct to your coinon web wallet

After linking alby to coinos (they call it NWC technically) In alby , you'll see the option to transfer yout BTC out to coinos wallet