Best is to avoid altcoins all together and just stick to bitcoin that you store in open source wallet like Electrum or even better hardware wallet. That way you dont have to worry about these types of airdrop scams
It's true that there are so many airdrop scams but they are still some decent ones though fewer in number, my brother and cousin have gotten few NFT as an airdrop and it's worth some good decent amount of money, It's hard finding good airdrop but they still exist.