Yes, I did /locate command, but I play in normal release version.
Sorry, I can't get my world as file, because I am on xbox. The seed is 7450399754159464024.
I mined 2,000 blocks in nether and then started searching.
Yes, the version is 1.19.81. I just opened minecraft, and it freezed. Then, I restarted my console and opened minecraft again. It succesfully loaded. When I opened my world, game freezed again.
So, I was in my base on copy of my world, typed locate command and ruins were supposed to be on 880 1136. Nothing was on that cordinates. Then I teleported to unloaded chunks and type locate again. Structure should be on 2912 832, but nothing was there. After repeating the process over 10 times I finally found one. Note, that all locate commands were used in unloaded chunks. Also this world was created in 1.19.20.