Which Pokémon game should I get?

Hii! I just saved up about 75$ and I’m looking to get a new Pokemon game for switch. I’ve only ever played Sword and Shield and really enjoyed it. Currently my top choices are Legends Arceus and Brilliant Diamond. But I don’t know a lot about the story for Legends Arceus. Any help would be greatly appreciated. Thanks so much!

Edit- thanks so much for the help! Gonna get legends Arceus!!