Regretted

He regretted not saving money when he was younger.

She regretted not studying for the exam and failing.

The old man regretted not spending more time with his family.

The regretted mistake cost him the championship title.

She regretted not learning a second language when she was in school.

They regretted not attending the concert when they had the chance.

The chef regretted using too much salt in the dish.

He regretted not standing up for his beliefs during the political debate.

The singer regretted canceling the concert at the last minute.

She regretted not wearing sunscreen at the beach and got sunburned.

He regretted not taking a gap year before starting college.