Most people try to work for many hours but spend most of that time distracted. A better strategy is to focus deeply for short periods.

Try working in focused sessions where you remove all distractions. Turn off notifications, close unnecessary tabs, and give your full attention to one task.

Even two hours of deep work can be more productive than an entire distracted day.

A good explanation of this concept is discussed here:
https://www.calnewport.com/books/deep-work/

The key idea is simple: focus deeply, rest properly, repeat daily.