I can empathize with your goals and your current situation, so please take this in that light: I don't come away from your post thinking that you really understand how the proper nouns in your post really fit together. My initial reaction was "this is pretty word salad-y." If you're going to write a longer thing about tech, it's probably worth investing a little bit of stylistic and structural effort into not dismissing something as rigorous and well-tested as PostgreSQL with three words or investigating MongoDB deeply enough that you can totally use it with languages and runtimes you already know (which you can).

And don't get me wrong, you totally might have a handle on it! But conveying that you do is a very large part of being successful both in contracting and in landing high-value permanent positions. You gotta talk the talk as well as walk the walk. It really does matter. I wouldn't hire even a junior developer if I thought their mental process was as all-over-the-place as this post suggests.