First time home buyer advise

Hello, first time home buyer and poster. I bought this house a few months ago in St. Louis Mo. The house has been completely renovated in the last 6months and I believe most of the construction leftovers/trash was buried in the back yard. I'm not 100% sure about how it looked prior to the renovations but based on the multiple concrete slabs and burred posts I think most of the yard was covered by a deck and an above ground pool. I removed all the slabs and posts and have been trying to clean up all the trash, level it out and haul out some of the rock but it seems never ending. On top of that, about half way down the yard from the perspective of the photos there is many stumps of what I'm assuming are small trees or some kind of brush that was cut off about 4 inches from the ground. They are everywhere, so much its hard to walk. I forgot to get pics of them I will get some and update if it would help. I plan on removing them all and doing the best i can with the rock. Is there any chance on getting anything to grow back there without covering it all with top soil. I'm not ruling it out completely it would just be a pain because there is no access to the yard by truck it would have to be wheelbarrowed in.