Some Swedish movies everyone should watch:
Kopps (All movies from Josef Fares are great. He also happens to be the founder of the co-op focused game studio Hazelight Studios, which have made A Way Out, It Takes Two, and the recently released Split Fiction)
En man som heter Ove (A Man Called Ove)
Populรคrmusik frรฅn Vittula (Popular Music)
Brรถderna Lejonhjรคrta (The Brothers Lionheart) (And all other Astrid Lindgren movies. I happen to share the same surname, heh.)
Sagan om Karl-Bertil Jonssons julafton (Christopher's Christmas Mission)
These were just the ones I thought of right now, here are some more comprehensive lists:
A Guide to Swedish Film: 10 Films to Watch
The 25 Best Swedish Movies of All Time
I always recommend watching with undubbed with subtitles of your own language, it's just better in 99.99% of cases.