Could you please give us some more details?
Which system version is running on more Mac?
Which version of Photoshop do you have installed?
What is the current problem? What happens now, when you try to open a photo in PhotoShop? DO you get an error message? Which message?
What has been the problem you tried to fix? And what has been the advice you followed?
If you upgraded to a new system version and some applications should now be incompatible, you may want to restore your Mac to the previous state from the last Time Machine backup you made, before you changed something. The procedure is described here:Recover all your files from a Time Machine backup - Apple Support https://support.apple.com/en-gb/guide/mac-help/mh15638/11.0/mac/11.0