You got nothing because you did nothing before joining those kind of airdrop(research is must before you join any airdrop),
for example if you were long enough in our cryptosphere and joined eBTC airdrop a months ago,you should know the fact that they're giving away $100++ for every person.which mean Airdrop is not as shit as you described.
but,it does not mean every airdrop is a legit.
that was why,before you join or participate in any kind of airdrop it's highly recommended to do something called 'research'.
because research is window to see the whole world,and to see it's worth or not.
be smart people.