Reading over your questions, my (not a moderator) opinion is they're not bad - I only caught one typo at a glance, the grammar looked okay, they generally have the necessary info, and are on-topic.
They do strike me as being rather niche. The guidance for upvoting includes "it is useful." Presumably you find them useful in the context of what you're working on. But upvoting is partially a measure of how useful things are to others.
Thanks for the feedback. I remember a particular Stack Overflow moderator mentioning in chat that 0-score questions are weighted slightly against you in the Q-ban algorithm but for some reason I cannot that message.
That's not something you can necessarily control, so you might want to consider other ways to contribute to the community - answering questions, making useful edits & if you're at the rep level for it, doing review queue.
Also FWIW, despite spending a fair amount of time editing other folks' posts, mine own have had some glaring typos. Humans tend to apply a silent casual auto correct to our own work because we know what we mean & sub that in for what we might have (mis)typed.
It happens. Typical editorial grief for me is spelling, grammar, punctuation, tags, and markdown formatting. From what I could see, you're aware of all those things.
I have to go do some off line stuff. If I have some other thoughts, I'll @ ping you.
Discussed in the mod channel and we agree. Thanks for rescuing the question, @Pikalek!
Also, to chime into the earlier discussion, I'd agree that I've never seen a user question-banned for posting questions that attracted no votes. If you were to see something like that happen, you'd be welcome to report it to us here and we could investigate whether it's a bug or something we can override for you.