I got a really good one I thought of that likely slipped by, almost forgot to post about it...
The Art of Self-Defense - 2019
Think of a Cobra Kai dojo with a John Kreese (Martin Kove) figure and the whole "Mercy is for the weak!" mentality... Take that concept, play with it to further extremes with tips from Quentin Tarantino and THIS is what you get!
It sucks even slightly describing the plot because the pay-off was so great, the trailer gives away too much perhaps as well... I went into it with a blank slate, just because of Jesse Eisenberg, and a basic tag was enough: some guy got beat up who wants to learn martial arts to defend himself. Starts slow, boring almost, but they put a hell of a twist in this, that's for sure!
HIGHLY recommended!
It's f*cking "woah" great by the end!