You have a lot of options. Side stories like Manderville might be fun, or leveling other jobs. A lot of people just like hanging out chatting/doing music. Others RP or dive deep into other content like Eureka or collecting minions or cards.

Like others said, there really is no wrong answer.

That said, do t feel like you have to force yourself to play either. I hope you continue to enjoy Eorzea, but if it’s not doing it for you, try another game like Nier or Guildwars 2.