How to use Photoshop for Macos Sierra

Hi!

I purchased the adobe package and when I tried to download my apps, it said it wasn't compatible. I talked with support and they said I need a previous version for it, they sent me one and it didn't work. Does anyone have the file of Photoshop for MacOs Sierra 10.12.6? I can't download Big Sur or Mojave and I can't get a new computer either. 

Thank you so much!