Lost my minecraft base

I made a base with friends a year or two ago and saved the world in my backup. Upon openning it again, my character respawned at the original x0z0 point instead of the base.

Dying brings me back to the original spawn point instead of my base and I have no idea how to find my old base. I know I travelled far away to make it and I have spent hours looking at the seed map trying to find somewhere that might match it and entered creative to fly around and look with no luck.

Is there anyway to bring up a map that shows structures that have been built or am i screwed?