I asked a few questions on this website and I think all of them got deleted. I have no idea how to ask a good question on this site. I'm not a researcher. Maybe researchers have knowledge that I don't have from which they can figure out how to ask a good question. I read How do I ask a good question? and What topics can I ask about here? and neither of them helped.
Basically, I would like a detailed answer teaching me how to ask a good question. I don't really know how to explain what type of answer will help me. Maybe somebody could explain what's wrong with the question Is math useful for non-math-research (accessible to 10k+ users) I asked that got deleted. Maybe people never know for sure whether a question is worthy of deleting, and when somebody deletes a question, they do it because they're pretty sure that it's worthy of deleting and pretty sure that it would waste so much time more heavily researching whether that question is worthy of deleting.