I have always seen time zs an illusion, like so many things. We should not think of the future or of the past as places (to which we might travel). The only thing that can be said to exist is the present.

The present changes, and we can see traces of its previous states in various ways (memories, physical constructions, etc.) We can also make predictions about the future states of the present to the extent that we understand the rules by which the present changes.

On the surface this concept of time seems to conflict with the notion of time as part of a four-dimensional thing called "space-time," but a variety of approaches can be used to resolve this.