You should make sure to vet the bounties that you are participating in more carefully. There are a lot of scam bounties but you need to understand that there is a way to avoid them, which is by reading up on the project. When you see people talking about do your own research on this forum, they are not just saying so for the skae of talking, they say so because that is the way for you  to avoid scam bounties. Don't give up, there are lots of good ones out there.