"Files" is not reponding. Zorin 18?

About sharing the logs, I would recommend that you give Mint's System Information tool a try. It automatically logs the crash logs for users to review or share, and warns you about conflicts if any. I personally have found it helpful when something got crashed or conflict happened under my device.

Getting it working under Zorin has a little trouble but this guide shares simple easy steps to do get it working: Linux Mint's System Information Tool in Zorin 18

After going through the steps, restart your device. Launch file manager and when a freeze or crash happens, launch the System Information tool from menu and check both the Crash Report and System Report tab. There you can find the logs cleanly.