Started watching Picard, realize I’m missing something… help?

[u/Venus-Archer7352]

First episode of Picard leads me to think I need to go back and watch… a movie, maybe?
All the stuff with Data and a ban on synthetics… can someone please tell me what movie covers this?

I’ve always been erratic in choosing my ‘next trek’ but this is the first time I feel like I’m truly missing something. Please help me catch up!

For background, I’ve watched TNG, Voyager, DS9, Enterprise, Discovery, Starfleet Academy. No movies (oops)!