Ruminated

They ruminated over the financial losses incurred due to the pandemic.

He ruminated over the missed opportunity for hours.

They ruminated about the loss of their beloved pet.

He ruminated over the time he wasted on unimportant things.

She ruminated on the hurtful words spoken by her friend.

She ruminated on the fact that she never pursued her passion.

They ruminated over the end of their vacation.

He ruminated over the decision to drop out of college.

He ruminated on the meaning behind the novel's ending.