The common problem I see is that most bounty hunters don't even evaluate the campaigns they're participating in, most would just join without even thinking and then rant by the end of the campaign 'cause they receive very little rewards.
Whatever bounty campaign is running now, only the project team has the final say as to what the rewards will be and they don't care about those things you mentioned; at all. All they care about is getting exposure for their project. Some of those project teams don't even care what the current value of their tokens/coins are and just gonna dish out billions of their native tokens for a bounty campaign. That should tell you how much you'd probably earn on that campaign. Basic economics supply and demand. If you think the rewards are too small, then don't join.
The key is to evaluate the project, the rewards and then decide if it is a good idea if you participate or not.

I guess it is safe to say not all bounty hunters are alcoholic 
All kidding aside, you can try and learn more technical skills like coding to get a stable job so you won't have to rely on bounty campaigns.
Another method is to build up your own blog or website, do write-ups, or do video reviews about projects, build up your channel and monetize it.