Crypto trading and bounty campaign is not profitable anymore like last year. Maybe you can try airdrop program and affiliate program.
Crypto trading is still very profitable if you can at least manage yourself and you are patient enough to know when you want to be getting into the market. One thing I have always known for sure is that there is no way you can get the best of any market if you keep applying emotion to everything you do. Your knowledge should always come first and you should always know that as long as you know how to manage yourself, stick to a strategy, then you will be fine. Everything is still profitable, if you know how to play your cards right.
you can join legit airdrops and promote your referral link. If you are good in writing then you can do steemit blogging and earn some steem.
Airdrops are simply waste of time. You may not get the tokens/coins which are worth for paying tx fees for moving them. I am saying these as per my experience. Blogging and content writing are always good way but need good knowledge on monetizing.