If you do not have any capital and you have a lot of time, most of your attempts may be positive, and you can act with these possibilities. Also, in times of NFT hype, it might be better to spend time on this kind of work. It's really not easy to earn free money. If you only expect airdrops, you can usually regret wasting your time. That's why it's best not to expect.
Following the NFT hype doesn't waste time if we only follow the airdrop program / NFT rewards on potential projects, so we don't need to join all airdrops to get free NFT but must be selective in determining the airdrop of potential projects before joining to get free NFT.