What we call the past and the future are actually our hopes and our memories, but not something tangible which we can visit. So much for a 3-dimensional universe. The 4-dimensional, Newtonian, mechanistic, materialistic universe also makes sense. You know there is space and time. All things, events, and phenomena are within space and time.
Causality is also within space and time.
This is the prevailing view of scientists for the last 300 years or more. Again, my own revelation has certainly called for a new view of the dimensionality of the universe right from the beginning. I was told right up front that the universe consists of at least 9 or 10 dimensions. There are progressive limitations. Forwards along the direction of motion is simple, just make effort and keep going.