How can I effectively address and repair dead grass patches in my lawn?

To effectively address and repair dead grass patches in your lawn, start by removing any debris and dead grass from the area. Then, loosen the soil and add fresh topsoil or compost. Next, sow grass seeds or lay sod over the patch. Water the area regularly and ensure it receives enough sunlight. Finally, maintain proper lawn care practices such as mowing, fertilizing, and watering to help the new grass grow and thrive.