well really ?
i think that you have been in luck to get some worth coin in airdrop, nowdays airdrop are really not many people mention about it because the trash coin they distribute and useless without a further development in their project so many people are just forgetting about the airdrop when thingking about the profit
Fortunately yes, most of airdrops are not worth it.
However you can join every airdops available either in this forum or those websites. I'm sure you will find the one which has a huge value. But, only if you don't mind to share your identity for KYC proccess.