I think on alby you have to set up lightning channels which is a little more complex. If you dont know how to do that I would recommend getting a lightning address through nostr:nprofile1qqs9xtvrphl7p8qnua0gk9zusft33lqjkqqr7cwkr6g8wusu0lle8jcpp3mhxue69uhkyunz9e5k7qg6waehxw309a3kzcmgv5ejuurjd9kkzmpwdejhgtmkxyq32amnwvaz7tm9v3jkutnwdaehgu3wd3skueq4089x0 or wallet of satoshis as they manage this for you before leveling up to running your own node or using a self sovereign option like Zeus wallet.
https://medium.com/@michael.leigh.stewart/setting-up-a-lightning-network-node-with-alby-hub-alby-cloud-4895e97624f8