if I don't have the latest app, does it mean that I can't retrieve my previous photos from Lr?

if I don't have the latest app, does it mean that I can't retrieve my previous photos from Lr?

By @NeilW2897

There's a lot more information we would need to give you an informed answer. 

So, in no particular order, we need

• Are you talking about Lightroom (Lr icon) or Lightroom Classic (LrC icon)? What version NUMBER? (We need the number and NOT words like "latest" or "up-to-date")
  • If LrC, your photos are never stored in Lightroom Classic, and so they remain untouched and in whatever folder you put them or whatever folder you told Lightroom to put them in. You don't need any software to "retrieve" them. However your edits and user-provided metadata are stored in the LrC catalog and then we need to know version NUMBER of your software in order to give an answer.
  • We also need to know what version NUMBER of Lightroom Classic did you use previously?
  • Do you have the catalog file from whatever you used previously?
• Why don't you have the latest version?