With all the context behind it I think the last scene of Star Trek: The Next Generation counts

Edit: Added link

Rounders has a young Matt Damon and Edward Norton and is entirely about gamblers making their living as poker players in the late 90’s or early 2000’s.

It’s pretty good

Edit: I just realized you said not entirely about cards, but I still highly recommend the movie. The plot revolves around cards, but it’s also about ambition and knowing when to cut off deadbeat friends

Well Casino Royale comes instantly to mind

Also the oceans series.

I fact I’ve noticed many heist movies have one. Not just oceans 11 etc where the heist in based at a casino. I could talk about why for an hour but I’ll spare you.

I believe rififi starts this way

The Hangover Casino scene

I still enjoy the “Dell’s poker face” from Only fools and horses…

But probably not what you’re aiming for ;)

https://youtu.be/C_fHScmyWTA?

The Fizbin scene from Star Trek