I began to think this would be a waste of time with everything I learned because almost all the projects I had followed ended in scammers. Is this a waste of time for me? 
this would be the end if you will stop, and since you are a newbie dont expect to have a good profit doing bounty company just keep on moving although sometimes you will feel tired because of those scam project, have patience.
If you stop learning, the newbie will stop, the newbie will not work, so learn for something more.
Learning is indeed not easy and requires precision especially in choosing gifts. The effort that you do will certainly be comparable to what you have achieved.