First, ensure that you don't have any mods installed if you're on a platform that allows them. Mods can often interfere with the normal gameplay and prevent story progression. If you do have mods, remove them and try again.
You could explore new quests and missions that get unlocked as you progress. Also, interacting with other players and joining multiplayer events can add to the story.
Sometimes, story continuation in Red Dead Online depends on completing specific tasks or achieving certain milestones. Check your in-game journal or map for clues and instructions.
Well, one way to continue the story could be to introduce new quests or challenges based on the game's setting and lore. Maybe have some unexpected plot twists or alliances to keep players on their toes.