I don't know if this will help, but in terms of questions I have a lot of similar problems, I'm very sensitive but I need feedback to improve so I try to get feedback in a way that doesn't hurt me nor risk hurting the kind people that do come and give me feedback. I also tend to describe stuff badly and ramble. Despite that I feel like my question thread was really helpful to me and a lot of really nice people came to help me here : https://forums.tapas.io/t/how-do-i-manage-a-shifting-artstyle/75257
I'm not saying it's the best way to do it, but it might give you some leads.
I gave a lot of thought to trying to make the question clear even if explaining the context and stuff takes a while. I also tried to only ask questions other people's opinions would give me some insight on. I did want to ask about plot stuff and how to write x thing or how to dose subtlety and metaphor, but that stuff is not something other people can really judge until it's properly done in the comic and then I can ask for impressions and try and improve for the next pages.
I also framed the questions asking what other people would do in my place. "What would you do if you had my problem?" rather than "How do I do this?". It's small but it prompts people to respond with "I would do this" rather than "you should do this" and the former makes it easier for me to take the useful stuff from the answer without feeling demand rejection. (But that's just a little trick I play on myself to make sure I can properly consider the help people are giving me).
Finally I didn't respond straight away. I took the time to read and reread the answers, digested them and tested a few of the practical suggestions out to see how they look before coming back and answering. Rereading the messages helped me understand some of the things that I had misunderstood the first time + forced me to properly think and consider things even some of the commenters didn't necessarily mean.
A lot of questions should be to help jumpstart your critical thinking about your own work by giving you insight into other people's perspectives or how they get out of a problem you might be facing that might work for you, not to give you a direct answer.
I hope this helps!
Edit: I'm reading the answers after me and I'm seeing another problem: you need to think about your questions more before you ask them. You're not asking the actual question you want an answer to so you're chain-asking things that aren't the same.
Example : you asked if it was ok if characters were simple in a short story.
You did not think beforehand what the answer "yes" or "no" would bring as problems. The real question you were probably asking was:
"I have an effeminate gay character in my short story. Short stories usually have simpler characters. Is there a way that I can write a simple character like that without it seeming like a stereotype?"
I still have qualms with this question because the answer is "yes but you really have to do a lot of work to be around people like that, see their humanity, understand them beyond the surface level, and then breathe that understanding into your character while giving the audience less detail to keep the story short."
This is not a question we can give you a quick fix to.