Terrible Garage Floor? The person who originally built the garage to our house did...

The person who originally built the garage to our house did an beyond doubt terrible commission. Rough uneven surfaces, huge pits in it, you can see grades where they attempted to fix mistakes and with the sole purpose made it worse, etc.. What is the most effective and cost efficient way of fixing this?
Answers:    scrubby set self leveler and an epoxy finish or try nature stone excelent look
Man I don't know the answer to this problem but I have a garage the same road and it was horrible. I be lucky enough to be renting and when I moved the first entry I looked at before buying a house.