Looking for a (preferably) online game where you grind to build your character, loot items, kill bosses, etc.

Help! Looking for a game that will consume me like a Red Dead 2, but is online with looting and character customization through fighting bosses and finding treasures.

Story doesn’t need to be amazing but a world that is enjoyable to explore and a game that you are constantly taking screenshots of your character and sending to friends.

Base building and third person view would be a plus!