https://nota.md is my absolute favorite writing tool.
It's like a markdown editor with some code editor features, like for example multi cursor/selection, auto bracket closing, option + up/down to move/reorder lines, things like that. The "hide markdown" function makes it very nice to read as well.
It works on plain markdown files, which is really convenient for many things. No subscription, just a very reasonable one time price (they used to have a free trial/beta, I don't know if that's still the case).
I use it to draft pretty much everything I write, I just copy paste to confluence/gdocs/slack/wherever.