Find the last moment you understood
An unsuccessful attempt often ends with several things happening at once. Replaying that final confusion in your head may not identify a useful change. Instead, work backward to the last moment when you knew where you were, what you wanted to do and which input you chose. That moment is a practical starting point for the next attempt.
Suppose a fictional platform challenge ends with a missed landing. The final fall is the outcome, but the earlier takeoff may contain the decision you can change. Alternatively, you may have reached the platform and then moved off its edge. Those situations need different questions, even though both look like a failed jump in a brief summary.
Ask a question that one attempt can address
Replace a broad instruction such as play better with something observable. Did I act before the moving object reached my chosen marker? Did I release the control before the character reached the target? Did I choose a route before checking where it led? A question is useful when you can describe what evidence would count as an answer.
Keep the next change small enough to interpret. If you alter the route, input timing and camera position together, a different result may be hard to explain. Changing one controllable choice does not make every attempt scientifically comparable; games can contain randomness or hidden state. It simply keeps your own intention easier to remember.
Record uncertainty rather than inventing a rule
After the retry, separate what happened from what you think caused it. I landed farther to the right is an observation. Holding the button longer always adds distance is a rule that would need more support. An unfamiliar control system may respond to release timing, movement, momentum or something else. Read the instructions before adopting an explanation.
If the result does not answer your question, simplify it. You might watch one obstacle cycle, try an input in a less demanding situation, or return to a section where the relevant action is easier to see. Stop the exercise when another attempt is unlikely to add useful information. The aim is to leave with a clearer next decision, whether or not that particular retry succeeds.