yes sir, that is the problem of airdrop campaigns nowdays. for last few months i have completed almost more than 1500 airdrops and i got nothing there.
1500 is a lot and knowing these are all nothing is really dissapointing. Maybe try to join some with really those are high value projects only. Cause doing airdrop now with easy task is not gonna give you money, unlike before that even filling up a form for an airdrop can give you $500 or more in value.