Many airdrop platforms don't bother to list genuine airdrops only on their platforms instead they mixed the good ones with the bad ones,the best few airdrop platforms i trust and use since 2017 are

Airdropbob
Airdroprating
Airdropalert

Airdropalert teams always take their time to select genuine projects only so they always have very few airdrops available, airdropbob and airdroprating are good likewise but ive joined some airdrops from them and till date i received nothing