Disclaimer: Personal Opinion Below
StackOverflow has been noted to not be very welcoming to new users. This is followed by meta discussions on the main meta. I think that we also should reconsider our attitude as well.
As an exemplar post, this question has two down-votes and one close vote. There are no comments whatsoever, neither explaining the down-vote nor the close vote. The user is not new, and yes, one could expect them to read the (honestly, quite difficult to find) How To Ask page, but in my opinion, this is neither a bad question nor a personal question.
There is a vessel located on the left middle side of my forehead which keeps pumping for few times noticeably every few minutes, my question is: What is the vessel that is located in this side? and what might be the causes of its pumping?
This is very easily reworded into "What are vessels flowing on the left-mid side of the forehead that can be felt pulsating" and the answer would be a simple map of main arteries of the head. OP can check for themselves where they felt the pulse, or you can speculate and talk about the larger, more exposed arteries (safe to assume it's a large deep artery or one of the superficial ones).
It takes me 5 minutes at most, and the post is (IMHO) on-topic and answered. It is totally fine if you don't have the time to google a map, or can't answer the question. Instead of down voting or close voting, a minor tweak to the question would be sufficient. OR - at least comment why you took the actions, there even is a battery of sample comments to copy and paste.
Here is another example: White color on clothes after sweating?. The question has currently three close votes and - before my edit - read:
I recently I have a weird thing happening to me. After I’ve sweat a little bit, my (dark) clothes turn a little white-ish.
Again, even as it stood, I can't see why someone would VTC that as asking for personal medical advice, but I have edited it to make it more clear. The question attracted a decent answer:
Sweat contains a high concentration of salt. Just as the salt from antiperspirants can stain dark clothing, excessive sweating can leave a ring of white salt on dark clothes. Often you'll notice dark colored shirts with white rings around the collar after profuse sweating. Usually this salt will wash out during a normal wash cycle, but you may wish to soak the material is cold water to dissolve the salt if the stains are tough to remove.
This answer has been down-voted to -3, I think, and LangLangC posted a comment stating that the answer needs to be backed up with reference. That might have been a bit pedantic, but it's still according to our rules. However, the fact that sweat contains salt is so basic that I wouldn't downvote an answer without the reference like that, a simple comment is sufficient. Or you can do the answerer a favour, like LangLangC did subsequently, and just include an extract from Wikipedia for them.
These are just two examples from today that would have pissed me off so much as a new user that I probably wouldn't have revisited this site again. As we are all trying to revive this site and get more activity and better questions, I'm not sure this is the right way to go.
A bit more personal: My first post ever on this site was a speculation about why a person might feel thirsty (1k users), which is obviously off-topic and the answer was pretty bad as well. Being relatively new to the SE model, I haven't had a clue where to look for scope and so on. I immediately received a downvote but also 3! comments explaining why I shouldn't answer questions like these and where my answer was lacking.