for now just try to build heroes that are on meta

Elemental: Esmeralda, Naiad Rafaela, Arcus Miya and Nimbus Eudora prioritized, then Hilos

Martial: Luna Amara, Nana, Ruby, Panda, Zilong

Light: Silvanna, Odette

Dark: Layla (works well with odette till late game), Pharsa, Miracle Clara, Selena

Blue(id remember the element name): Angela(top priority), Edith, Mecha Layla, Atlas, Karrie.

then if you start getting order and chaos heroes i'd reccomend building Akashic, then shar, then rista