What's the actually reliable free movie site for kids that has no ads?

EDIT: Checking out https://cine.su right now and the animation category is solid and safe.

Trying to stream some older animated movies for my nieces this afternoon, but the free ad-supported platforms like Pluto or Tubi run loud, unskippable commercial breaks every 10 minutes. It completely ruins the kids' attention span. Any ad-free pirate gems?