People should have a weapon against fraudsters, scammers --or what we call that deceive people just for easy money.
That weapon could be, knowledge and awareness.
If you have all of these you will never be their victim, they are just like prey waiting for a victim and most of them are naive people who lack knowledge. Airdrops and giveaways are prone to scams --if we join we must be careful or never join with these activities and keep in mind that there is no totally free money on the internet.
The best weapons are your carefulness and you are not greed.
If you are careful, you will not click on any strange link, click on links sent to you by any stranger who DMs you first.
If you are careful, you will not download any file from strangers.
If you are not greed, you will not go first and send you money by believing in promise like "Send me your money, you will receive a double money from me".