commiserate

"Can we commiserate over our shared dislike of Monday mornings?"

"After the team lost the big game, the players gathered to commiserate in the locker room"

"Please commiserate with your sister; she failed her driving test"

"My mom will commiserate with me when I tell her I have a lot of homework"

"I felt so sad when my pet ran away, and my friend came to commiserate with me"