Is there a latex editor that can show the end product side by side while you're writing the document?
look for the wysiwyg tag ( read note 1: https://en.wikipedia.org/wiki/Comparison_of_TeX_editors#cite...)
There is also the 'Integrated viewer' column with notes on live/instant updates.
https://github.com/shd101wyy/markdown-preview-enhanced
I have looked into markdown editors a lot, and this is the best by far. It supports Latex, PlantUML, images, Graphviz, and some more stuff.