I tried downloading previous versions too. But I lost all the files that I was working on.
Where were your files stored? Locally or as cloud documents?
They were saved locally.
Do you mean the files no longer show in the Recent list or that they are no longer in the folder on your computer where you saved them?
Are you on Mac or Windows, and where (exactly) were you saving them?
I can access the saved files but I cannot see the files I was working on recently. I lost them with the update.
When you start reopening the files that you saved and can still access, then they will appear in the Recent list again. It's not automatic.
You didn't answer the question about Mac or Windows. If you are on Mac, use Spotlight to find:
This will show all recent .PSDs.
If I misinterpreted, please clarify.
Hi, sorry my bad. The files weren't saved. They were shown on recents and I lost all the files that I was working on. Also, I have windows.
Recent files is just a quick convenience for files you have worked on recently, as in "yesterday". It's just so you can pick up where you left off, without having to open your file browser.
The list is cleared with a new Photoshop version, when you reset preferences etc.
You haven't lost anything, your files are wherever you saved them on disk. Pay attention to where you save. Use a proper file browser to keep track.
Okay. So is there any way I can get back the files I was working in?
Yes: open your file browser (Windows Explorer or Mac Finder) and find them. Use Windows or MacOS to search. They will be there, somewhere. Your images aren't "in" Photoshop. You can wipe Photoshop completely from your system and the images will still be wherever they were saved.
Take this as a lesson to always make a note of where you save things. You choose where to save in the Save As dialog. Set up a logical folder structrure so that you can find it later.
Hint: if you're on Windows, image files default to the Documents > Pictures folder, if you haven't changed anything. So you can start looking there.