Yes, according to our current understanding in physics, all we can ever experience is within the context of four-dimensional spacetime. Spacetime, as described by the theory of General Relativity, combines the three dimensions of space (length, width, and height) with the dimension of time into a four-dimensional framework.
In this view, every event and object in the universe can be described by its coordinates in spacetime, consisting of three spatial coordinates (x, y, z) and one temporal coordinate (t). This four-dimensional framework allows us to account for both the spatial location of an object and its temporal evolution.
Our perception and experience of the world are inherently linked to the flow of time. We move through time from one moment to another, perceiving changes in our surroundings and experiencing cause and effect. Additionally, our spatial perception is intertwined with our temporal perception, as we perceive objects and events as being located in certain positions within space at specific times.
It's worth noting that there are also theoretical models, such as string theory or M-theory, that propose the existence of additional spatial dimensions beyond the four we are familiar with. However, if these additional dimensions exist, they are believed to be "compactified" or "curled up" at extremely tiny scales, making their effects imperceptible at our everyday scales of experience.
So, while there may be theoretical possibilities of higher-dimensional spacetimes, our current empirical observations and scientific understanding point to the experience of reality being within the context of four-dimensional spacetime.