Airdrops aren't always waste of time, it depends on how good you are with them, the easiest way if detecting a good Airdrops is to watch the rating on top Airdrops platforms like airdropalert or airdropbob, if it's rated 5 starts it's probably because it's listed on coinmarketcap and it's trading
I never believed in sites like that. They work transparently and make false judgments, I have participated in a lot of airdrops from their website but as a result, no project has been really successful. And they never send tokens to my wallet
Have same experience here. Participated in several airdrops and none of them payed me anything. I might be just unlucky, so there is another good reason not to waste anything on airdrops: they're most certainly scamming us for data.
Most of the time in order to join the airdrop you have to send your wallet number and do other actions which may include sharing some of your info, this is fd up since they're not paying off in 70% of the time