Going through an existential crisis about free will right now...

which of these movies say that we do have free will? looking for something to confirm my biases

Stalker debates it to some extent, can't remember if it lands with definitive answer.
A Clockwork Orange is about having free will and debates whether it is right to remove free will even from a violent offender.

Primer
Timecrimes

Moon
Logan's Run
Oblivion

I don't think these count.

I’m actually watching American Beauty right now

Knowing with Nic cage.

I remember being an edgy nihilist when I was 14.

metal gear solid 2

montalk.net/metaphys/70/freewill-fate-and-causality-in-matrix-reloaded