Honestly, the easiest way is to pay your cast and crew.
Doing something controversial might be easier if they see it as a job.
So many stories, so little time.

Please see earlier comment.
MAGA! FAFO! Schrodinger's Cat walks into a bar, and doesn't. Dumbocraps: evil people who celebrate murder.

Oh it's just if the script has controversial material in that scares others away form wanting to be a part of it, I am wondering how other filmmakers convince others to do it, when making such movies.

Damned if I know, dude!
MAGA! FAFO! Schrodinger's Cat walks into a bar, and doesn't. Dumbocraps: evil people who celebrate murder.

Maybe whoever is helping Jack make his Land Before Time sequel could help this guy out.

Oh okay, thanks, but I actually want to direct it, rather than find other students interested in becoming directors.
As for Hollywood playing it safe, well it would be an independent production of course. But indie films take more risks than Hollywood ones usually.

Post a bit of it here, and you'll probably find some takers.

Hang around a university campus that teaches film and pretend to be a student (walk into lectures, but not classes, as they'll know you're not on the list of students). Talk to some other students that are interested in becoming independent directors. Pitch them your script.

Hollywood wants money so they DO want safe.
Best of luck to you. I have a movie idea too.
….out of darkness, out of mind, cast down into the Halls of the Blind!