In most cases, I meet managers who are not competent, they do not consider our steaks, often do not respond to messages. This is a very big problem.
I am also disappointed with a failed project. I took part in a bounty project for two months or more and it turned out that after I finished I didn't get a salary, so I felt I lost a lot of time and my hard work had no results. I am very sad and cry if I follow the failed project.