Obvious To You, Amazing To Others https://sivers.org/obvious
There's also an animated video version, if you prefer video.
So think back to what you knew and thought 6-9 months ago, and write for people in that boat. You probably learned a nifty trick or two since then, or had a recent revelation. Write just about that. Once you have an audience you can start to listen to their reactions and further questions to decide how to back-propagate from there even more (because not everyone arrives at that point from the same path).
The cool thing is that this works even for stuff you aren't a master at -- there's always someone who is just a step or two behind you in whatever it is you are doing, even if you are only on step 4 or 5 from being an absolute beginner. As long as you care about the topic and can pinpoint a meaningful thesis for your writing.
That has the (big, in this context) benefit of directly and immediately showing that a) there is interest in the answer, since someone posted the question; and b) feedback about the quality of your answer, with the option to edit and improve it.
Sure it's bite-sized for the most part, but it is writing in some form. And yes I'm biased, it's easily my number one form of writing (but I don't go around wanting to be a writer, I don't think).
You're not contributing something useful if you're just pointing out the obvious. Yeah, you can write the ten millionth article on how to change the default slogan in WordPress, but unless that's the maximum extent of your knowledge, you're wasting your potential and everybody else's time. That's how I feel about it at least, and why I don't write stuff that's too obvious or has already been widely covered. In that case, I might give a small overview and some tips to newcomers and link to others that I think did a good job.
But don't get me wrong, I'm not trying to say that nobody should write about that, I'm offering my perspective on why I probably wouldn't.
The key is to accept that whatever is your topic and however you write it, someone will be disappointed because it is too simple, someone will be disappointed because it is too complex, someone will not understand the article because they miss some of the prerequisites, and someone will get angry because you spend too much time explaining the prerequisites.
People are different, you can't make everyone happy. The unhappy people are more likely to give feedback than the happy ones. (You probably wonder why other writers have tons of positive feedback. They likely paid for it. Or it is link spam: "your article is so awesome and inspiring; now here is a link to my completely unrelated web page".)
I guess you just have to imagine the target audience, and keep writing for them. First you get both positive and negative comments, which is okay, because the people who didn't like the first part should stop reading. If they keep reading your N-th article and posting the same angry comments, they are idiots; ban them and erase their comments. (There is a difference between pointing out a mistake, which is a good thing, and posting "this is noob stuff, loser" under ten articles in a row, which is bullying.)