You can watch three videos on Einstein's theory of gravity explaining "how gravity REALLY works" and get different answers. Two are claiming objects fall to earth due to "time dilation" (the change in clock synchronization at higher altitudes or speeds), while the other claims it is because we on earth are accelerating upwards at 9.82 meters per second, an even more absurd idea for obvious reasons on a spherical earth. https://www.youtube.com/watch?v=PjT85AxTmI0
If those are the best explanations these top minds can come up with, the only real conclusion is that Einstein's theory fails to explain the most basic examples of observable gravity. Namely you drop something and it falls to Earth, or you jump and fall back down to Earth.
I'm not saying Einstein did this intentionally, or because he was a big bad evil Jew. His theories did (apparently anyway) get several predictions right or right enough to make it look valid. But all it takes is one major flaw to invalidate the theory and go back to the drawing board. Or do what modern scientists do and keep doing mental gymnastics to avoid doing any useful and original work.
Physics has probably been set back half a century by people clinging to this idea for too long. It may have some true elements, but it is conceptually wrong and mathematically flawed. It relies on undefined hocus pocus (space-time curvature) that has led scientists (particularly astronomers) to very erroneous understandings of the universe.
I thought gravity isn't understood, and the newest theory was that it's a form of electromagnetism.
Mainstream physicists will tell you it is curved space-time, as if that is a real thing. But that explanation gets wonky in the case of an apple falling to Earth, for which popular science teachers are invoking even stranger ideas (time dilation creating gravity or earth accelerating upward) to explain it.