With respect, you might want to take a closer look
Discussion
With respect, we've been living with gravity for how long now and it's still just a theory?
Nobody knows anything other than we are here.
The Mandela Effect relates to the ‘nature of reality’ and Metaphysics; worth a look if that’s an interest. Gravity, as it is described by the mainstream scientific community (an attraction between 2 or more masses), is nonsense, IMO.