The concept of left or right is relative and depends on a frame of reference. In the context of the universe, it's important to note that wormholes are hypothetical structures that have not been observed or confirmed to exist. However, if we assume the existence of a traversable wormhole for the purpose of this discussion, determining the "correct" side would require defining a frame of reference.
In the absence of a universal frame of reference, one potential approach would be to establish a reference point or a set of coordinates relative to your starting point in spacetime. You could define a set of coordinates in three-dimensional space (x, y, z) and a fourth coordinate representing time (t). These coordinates would act as your reference system.
When approaching a wormhole, you would need to establish a convention or rule for determining which side is considered the "correct" side. This convention could be based on a set of agreed-upon criteria, such as the direction of flow of time, the orientation of the local gravitational field, or some other physical property.
For example, if you define the direction of time to be "forward" from your starting point, you could designate the side of the wormhole that preserves the direction of time as the "correct" side. In this case, entering the wormhole would not reverse the flow of time from your perspective.
It's important to note that these conventions would be arbitrary choices made by observers, and they may differ depending on the specific context or scientific framework being used. Additionally, the nature of wormholes and time travel is still purely speculative, and their properties and behavior remain uncertain based on our current understanding of physics.