Start with the service and action that failed, such as signing in or uploading a file. Add the exact local time and timezone, approximate region, device or app version, and the last time the action worked. Write the expected result and the actual error in one or two sentences.
Try one low-risk comparison—another browser or network—without repeatedly sending an action that might create duplicates. If a request ID is visible, include it only after checking that it is not a token. Crop screenshots to remove names, notifications, and account details. A short sequence of facts helps operators match your report to logs; guesses about the root cause can be labeled as guesses.