All motion is relative. There is no absolute reference frame. Your local experience of time is always constant and never changes. Other things around you that are moving quickly relative to you will experience time at a different rate than you.
If you’re alone in a universe with no other point of reference, then the words “motion” or “speed” would have no meaning. Even the “speed of light” would be meaningless because if there was light in this universe, then there would necessarily be other objects (photons) in the universe that exist in a different reference frame than you.
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