Usually not. If your passkeys are backed up with iCloud Keychain (iPhone) or Google Password Manager (Android), your Sendana passkey follows you to your new phone automatically, so "Sign in with passkey" should just work.
If it doesn't show up, don't worry, you're never locked out. Sign in with Google or an email code, then go to your profile icon, Security Settings, and add a passkey on the new device. If you lost your old phone, it's also a good idea to remove that device's passkey from the same screen.