Before bringing it back to its original shape let’s conduct a casual assessment of your lawn. Look for patches, dead grass, ingrown weeds, and areas with discoloration and thinning grass.
To check the compatibility of your grass, take a screwdriver and get it into the soil.
If it goes in easily your soil is in good condition, but if it has trouble getting into the soil needs aer... https://perfectgreenyard.com/how-to-attract-deer-to-your-yard/