Not have any exact way for earn cryptocurrency from crypto world, i always try to follow trend and try to make earn crypto. But always i try trading and Airdrop hunting and i think it is the best way for everybody.
To follow trends is a good way to make some money, I agree with you. Specially NFT And DEFI is good example of this.
However, Most of the time I like to do trade. It's a good way to make some money in the crypto industry. But it's not so easy to do trade. If you want to be profitable in trade, You need to gain huge knowledge. Without the proper knowledge, no trader can able to survive here. In 2018 I lost huge money in trade. But 2020 was a good year for me. Still, I am learning and I am making money by doing trade. So I suggest OP first try to learn TA, FA, Risk management, etc before starting the trade. Also first try to do trade with paper money.
Airdrop is waste of time right now. Maybe still there is some legit airdrop available but it's very hard to find out those.
Gambling is gambling, you can do it with a very small % of your fund. Maybe 1% is good. But do it as fun, not as professional gambler