If you can handle German only (with English subtitles if you can find the .srt for it), it is an intense character study that everyone here will love. It's a story that's hard to watch because of the intensity of the emotions all around. But, it's worth it. If you can torrent, yts has English subs that come with it.

https://www.imdb.com/title/tt8535968/?ref_=fn_al_tt_1

If you do get to watch it, a commentary here about the ending would be great. I understand it. But you need to think about it for a while. Then the ending will make sense.