[do] the maximum

to put in the greatest amount of effort, time, or resources to achieve a goal or make a significant impact

She decided to do the maximum she could to help the charity organization.
He wanted to do the maximum possible to improve his performance in the competition.
The company aimed to do the maximum to ensure customer satisfaction.
The athlete was determined to do the maximum in his training to prepare for the upcoming tournament.
The scientist was committed to doing the maximum to find a cure for the disease.