That's incorrect as well. You are mixing two relativistic effects: from the velocity of something relative to an observer, and from the gravity on that spot of the universe (which is what I assume you mean by acceleration).
Also wrong, as you dig deeper into a planet you experience less gravity, not more.
Velocity and acceleration are different things and Talking about less or more gravity is a poor descriptor.
At the center of the moon you would 'float' aka
no acceleration relative to the moon. You would still be orbiting the earth, sun, etc.
However by being at the bottom of a gravity well you get time dilation relative to someone in the same orbit on the other side of the earth.
However, it's important to note LEO means high orbital velocity which counters being higher in the gravity field. Similarly, standing on the surface of the earth you have time dilation from the earths rotation which you would not have at the center.
PS: On way to think about it is at the center space time is pulled by all the mass around you which is a stronger pull than standing beside a planet. However the pull is in balance, like a tug of war game nobody is winning.
Also wrong, as you dig deeper into a planet you experience less gravity, not more.