Do you currently use a chemical lawn company? Which one and what have they historically provided? If you DIY, what products and rates have you been using? Do you have an underground sprinkler system? Do you mulch your grass clippings? Do you have an older lawn with deep top soil? Or is it a new build with sod rolled on top of construction hardpan? The more details the better so we can pin down how best to help you.
A sentence or two here will do. Are you looking to save water? Build up thin top soil? Get your grass healthy enough to outcompete weeds? Break free of the chemical fertilizer or pesticide treadmill?