Is there a moderator that can look into this?
Remember that if you need to raise a post to Mod attention you can always flag for such, or see if anyone is in chat.
Are my questions actually bad quality? If so, how can I improve them?
I actually answered one of those posts, so I do consider that one answerable. Perhaps it was not the best phrasing you could make, but it surely wasn't terrible.
A suggestion, avoid using "Should I" on your posts, as that tends to attract votes to close as most of the time it ends up being an off-topic question (because it's basically asking for us to make a choice, which is off-topic for the site).
Now, regarding the other post (the reference one) I am clueless why so many downvotes...
It was closed because it seems the question was asked before, and thus closed as duplicate. However, the -6 votes seem a bit exaggerated. Still, the reasons for why users Downvote are unknown, so don't worry much about it.
If you ever feel hostility or that something is not ok feel free to Mod Flag, or ask in chat or here as you did now. Sorry if this was your first impressions on the site, I assure you this is not the standard here :)