If you're going to force me to choose between both, I'd just attempt to get good at trading. With bounties (outside of signature campaigns), you're just going to get useless tokens most of the time. But with trading, you can definitely make good money if you actually get good; but that's a huge if. The bad thing about trading though, is that you could simply end up with actually less money than when you started.
For me, I'd do something else besides both. Quick reminder that you can also make money outside of the cryptocurrency space.
Beside the small reward from social media campaign, we cant compare bounty campaign in 2017 to 2020/21. there are very few reliable campaign now and better reward in tune of a million dollar from the ICO scam era. Most project with campaign (more than 50%) are just scam projects. They struggle to raise fund because investors are smarter. Tokenomics in the market has changed and teams are struggling with the release of token to control price.For me, I'd do something else besides both. Quick reminder that you can also make money outside of the cryptocurrency space.