Airdrops can be very profitable if they are legit and have referral rewards too, this is good if you have multiple friends who you can refer to join the airdrop, many airdrops are fake but some are good, I suggest airdrops that are trading already
Not all of airdrops that has a refferal rewards program were good, only few of them is that good. From a bunch of airdrops, it doesn't guarantee one of them is good either. Especially if it's an airdrop from new projects. Not to mention airdrop nowadays requires you to passed the kyc and things, and that's kinda dangerous to just give your personal information.