I recently bought a new house in northern PA. This year when spring hit my backyard was a disaster. Most of it looked dead. None of my neighbors lawns looked like mine. As the weeks/months went on it started to look a bit better, but still a mess. Tons of weeds everywhere. Dead patches. So, I decided to take a soil sample and have it tested.
The most obvious problem is that the nitrogen phosphorous and potassium levels are all completely off the scale.
If I had to guess a cause, somebody (not necessarily you!) applied some fertilizer and got the concentration completely wrong. The high levels have killed off the grass but the tougher weeds survived.
The other problem is that the pH is low (too acidic) but that might just be a side effect of the insane NPK levels. For example the pH of ammonium nitrate is around 5.25 and the level in your sample is maybe 20 or 50 times higher than it needs to be to grow a good lawn.
The high sulfur level will also lower the pH.
We don't know what type of grass your lawn used to be, but a reasonable target value for pH would be 6.5 to 7.
Probably the easiest way to get the NPK back into a sensible range (if it works) is deluge the lawn with water for several months and hope you wash them out of the soil. Otherwise, you will be looking at removing all the top soil (maybe to a depth of a foot or more) and replacing it, which won't be cheap.
Trying to get the grass growing before you sort the NPK levels out is most likely a waste of time - and a waste of money, if you buy seed or turf.