Are head or hand movements accompanying self-talk that is abusive towards religion considered as utterances that render their perpetrator an apostate, and is it valid to make a general affirmation of faith after forgetting what was denied or said in terms of disbelief?

The obsessive thoughts have overwhelmed you, so seek refuge with Allah from Satan, and know that your salvation lies in turning away from what you are experiencing. What you have asked about are mere whisperings from Satan that have no reality, and you are upon Islam. All that is required of you is to turn away and distance yourself from what you are experiencing.