If you loved Doraemon: Nobita and the Animal Planet, try Doraemon: Nobita's Great Adventure in the South Seas
A bridge between a film you've already seen and one most people haven't. Here's what they share, and what the second one does that the first one doesn't.

Doraemon: Nobita and the Animal Planet

Doraemon: Nobita's Great Adventure in the South Seas
What they share
Both films are directed by Tsutomu Shibayama, and they both carry the cozy, playful mood tags, and they sit in Adventure / Animation / Comedy / Family / Fantasy / Science Fiction territory. If that's the register that drew you to Doraemon: Nobita and the Animal Planet, the second film will land in a comparable space — through a different lens.
What Doraemon: Nobita's Great Adventure in the South Seas is
A mild-mannered kid with a magic pocket convinces friends to chase a dubious treasure map, only to overshoot by a few centuries. Their holiday turns nautical when 17th-century pirates mistake hospitality for hostility. Some time-travel logistics get lost overboard along the way.