Yes but make sure you watch;

Excalibur
The blueprint for Snyder’s mythic visual language; heroes as knights, destiny forged in chrome and blood.

Seven Samurai
The original team-up movie; each warrior bound by sacrifice and duty, just like the League.

The Fountainhead
The artist versus conformity Snyder’s own cinematic philosophy distilled into one uncompromising credo.

Andrei Rublev
The struggle of divine creation mirrored in Superman’s resurrection and Snyder’s own tortured auteurism.

On the Silver Globe
Cosmic despair, fallen gods, and spiritual rebirth on a ruined world it's basically ZSJL/The Knightmare timeline without the capes

Ashes and Diamonds
A man between war and myth; the blueprint for Snyder’s tortured, world-weary Batman.

Obviously you'll also need to do a rewatch of Man of Steel and Batman v Superman: Dawn of Justice Ultimate Edition (Try to get the IMAX version of BvS) to get the true experience along with reading the planned 4th and 5th movie storyboards


If you don't want to do that first then I suggest you just go to reddit and enjoy Guardians of the Galaxy 2 or something since you won't fully have the mindset to understand ZSJL and it's themes