Or libreoffice draw sometimes, it depends, but yes, pdfarranger + one of the two is enough for most of the tasks.

I convert from docx to md specifically with the purpose of getting rid of Microsoft formatting aka almost converting to plaintext but preserve at least some structure.

For working with PDFs on a page level (moving pages around, deleting, copying pages between PDFs etc) pdfarranger is the best and easiest of anything I could find, can vouch for it.

I hope someone watches it and post a tl;dr here.

I’m interested too, but I don’t understand why everything has to be a video (instead of something like a blog post) and don’t have an hour for that.