NEED HELP

This is the first I'm playing in the endgame. I completed an atlas map, and I was wondering if there is a way to reset it so I can run it again. Any Help would be greatly appreciated.

You can run the same map as often as you want as long as you have the map item for that specific layout. That's the only requirement, having the map item. Atlas completion is only there to provide you with atlas skill points to improve content inside your maps.

thanks