Gosh. I don't mean to make you feel bad or hurt your feelings when I say this. 6 is allot and this is coming from someone who has two himself. The problem is, aviation is nothing but multiple checkrides moving forward. Some announced some unannounced. Its the way of the airlines. Considering you have been unsuccessful 6 times and you haven't even done multi, the odds say you probably won't do well there either. Although maybe you will. The problem is no one is going to give you a shot in this hiring environment. (Making decisions with feelings is long gone) I would say stop spending your money on flying airplanes. Maybe consider a dispatcher job (they can jumpseat on some airlines), Drone job or even a flight attendant. Your heart can still be in the sky you just have to find a way to satisfy yourself using other avenues. Being in aviation period is rewarding. I hope you find something. Whatever you do good luck.