PLEASE HELP - Older version content not showing up

I have an old project from last year that I would like to open up again, the problem is it does not have a project file, only the content ( Maps,Meshes etc. ) and it was created in any of the unreal versions released from April 2019 but I cant remember which one, All the .uasset files are present in explorer. but not in Unreal. I have already downloaded 4 older versions and hoped it would be one of them but my data has now run out. Is there ANY other way to get / Convert the assets to show up somehow in the editor?

Thanks a lot.