First of all there's nothing wrong with your questions. At least not the ones you've posted here. They are clear, provide the necessary information, and seem altogether fine to me. Frankly, I wish we got more questions of that quality. So no, you're not doing it wrong.
As to why they haven't been answered, I can think of a couple of possibilities:
Some of them are hard. They're not simple, straightforward things that any relatively competent Ubuntu user would know. Your bluetooth issue is probably specific to your hardware and is likely a bug that we can't help with. Your proxy question is about a design choice made by Canonical (or the Debian devs, or whoever it was) and, again, is hard for your average user to know the answer to. Your cifs mount is, again, about a functionality that not everyone uses. I have an idea about what might be going wrong there (I left you a comment) but most users never touch
/etc/fstab in the first place. Basically, for obvious reasons, the easier a question is, the likelier it is it will be answered. While we do have a lot of expert users on the site, not all our answerers are experts.
Bad luck. That's just the way it is. The person(s) who have the required knowledge to answer your question haven't seen it, didn't have time to answer it, saw it on their phone and forgot about it. Not much we can do about that.
Again, however, I want to stress that not only are you not doing it wrong, you are doing it very, very correctly. Your questions are fine. So fine, in fact, that if you feel they're not getting the traction they deserve here, you could flag for mod attention and ask that they be migrated to another site. All of the questions you've posted would be on topic on Super User and Unix & Linux. Of the two, I would suggest the latter for your proxy and cifs issues. The bluetooth question would also be welcome, but that is equally likely to be answered on SU.