A stop distance is not always an invalidation
An invalidation describes market behavior that contradicts your premise. A fixed number of points may control exposure, but it does not explain why the setup ceased to make sense.
For a range rejection, invalidation might be acceptance beyond the boundary. For a pullback, it might be a break of the swing that defines the trend. The wording must fit the structure you claim to trade.
Make it visible
Write a condition another reader could locate on the chart. “Looks weak” cannot be reviewed. “A candle closes below the marked higher low on the execution timeframe” can.
Grade process separately from outcome
A setup can invalidate cleanly and lose as planned. Another can drift into profit after violating its premise. Record those as different process outcomes, even if the account result tempts you to reverse the grades.
Keep studying: Bring your own examples to a journal and setup review clinic.