This site has been built up by many people, who really worked to establish it's reputation. I don't think your previous question was in anyway dumb,. You are being too harsh with yourself. But the down vote option is for obvious non mainstream questionsvital, off topic questions and toimo, to gauge by concensus if a question or answer is correct or notappropriate, in various ways, to the site.
So dumb questions will get d/v. Always
From your point of view, look at the questions that do get good answers and copy their style.
if you know some of your question is ok, go ahead with them in your own words, then copy (and credit) Wikipedia to express the parts you know that you know you are unsure about and will attract criticism if you badly word them yourself..