If you look carefully, you will realize that we are mostly promoting crypto projects freely! Like you are promoting 20 bounties but you only receive payment from 5 projects. That's mean we promoted those 15 projects freely, right?
Nobody wants to work for free. But is the situation as easy as you said? I do not think so. Sometimes it is difficult to find a solution, even the bounty you trust may scam you. You can accomplish something if you act together. For example, create a group in telegram and share your ideas. Choose the most suitable one and join it.