Who makes money in crypto now? Bounty / airdrops are no longer relevant, trading is not for everyone, ICO is no longer profitable, mining is also not profitable enough
I myself receive income from the nodes, feels good, and I recommend you to explore this niche. Good luck to all!
I don't think there is any 'one' thing to do in crypto in order to make money. Instead, a balanced approach of airdrops, ICO, mining, and whatever you can do is what you should do to profit. I also recommend getting involved with new projects to see what they need. Learn how to use Github to contribute and you may also get people to reward you for your efforts.