many project managers do not send payments whether what happens, whether because of the low rank /or the reason is forgotten,
Your rank has nothing to do with not getting bounty payment. There are very few bounties where bounty managers distribute rewards. In most cases the project team distributes rewards.
Bounty campaign payments are largely uncertain. You will get 15% rewards for all the campaigns you work on. And those which sent tokens, 5% will not be listed in exchange. Then you will actually get a 10% bounty reward. Because most projects fail.
You can start working again. Because now there is some payment available in Bounty.