And I must say that what you said is mostly true and I think the current bounty is like looking for a cat in a poke. If we are lucky then we will get a suitable and profitable bounty even though it takes quite a long time. If we are not lucky then the results will be unclear and can even lead to fraud.
But whatever happens will be a valuable experience so that we can be more careful and also always do research to choose a bounty and besides that for beginners it can be your activity in creating threads or posts that can improve or add quality so that you get other prizes that can increase your ranking.
Don't give up and despair, because there are still many better than bounties and you have to be able to learn everything well and also achieve it so that you can enjoy the results in the future.