20 bucks should have gotten you close to 200 crickets. Did you really feed them all off in one sitting, and not even gutload them? Crickets are not given food in pet shops and have next to no nutritional value unless they are gutloaded first. I don't feed off my crickets until they've had 24+ hours of eating the food I give them. Maybe you don't have good luck breeding your own feeders because you don't care for them correctly.
Sounds like you DO need more advice. Apparently more than your brain can handle right now. You may have all the "due time" in the world, but your dragon does not. When beardies get sick, you have to be on the ball. They deteriorate rapidly, and if you do nothing, a completely reversible situation could end up getting so bad, it will kill your animals. People on here are giving you a hard time because we've seen it all before and it's heartbreaking.