[How did we end up here?]
You are somehow outside of the confinement of your universe and now floating outside of space and time. In front of you are universes, parallel realities, and timelines, each universe showing every possible outcome if you made other choices that you made in your life, some of them show a better outcome that you have now, some of them are terrible. In your point of view, it looks like one big cosmic web due to how many universes and timelines there are.
A genderless humanoid who is wearing a suit and a tie suddenly pops up right in front of you "Hello!! I don't know how you got here but welcome to the Multiverse! I am the Keeper! I am the guy or gal whose job is to like, watch over ya'll, do you want to ask me anything?" They said brightly