There are only 2 dimensions. The appearance of a third is created by two dimensional matter accellerating. Each “disc” of matter is literally bent out of shape by unimaginable force. Gravity is a weak force but the force needed to bend two dimensions into three is irresistible. It happens so rapidly and continuously, we cannot observe any gaps. We therefore believe what we see as 3 but remember, you can only make a turn by applying a force – otherwise, you keep going straight.
The thing is, we can only perceive the 3rd dimension through the 4th, since we perceive objects through photons bouncing off them, and photons move through time, we would not be able to see without the presence of time. There are ten dimensions, watch this with earmuffs on, cause your brain will be leaking once it’s over. https://www.youtube.com/watch?v=gg85IH3vghA