All my life I have washed my face and I have always had certainty thst I have reached all parts of my face. recently I have entertained a doubt whether or not I have been reaching a very small area near my nose. I don’t have certainty either way on this doubt.
Can I ignore the doubt for all past wudhus and assume my past wudhu and salat are valid while being more careful for any wudhus going forward?