You need to consult a Neurophysician for complete assessment and treatment either in person or through video call. You should do exercises only after getting Neurophysician's opinion.

High possibility of parkinson's syndrome. Please consult neurologist .

Please provide more information so that you can be helped. What is the opinion of the doctor's that you may have seen in last 8 years? What do you do professionally?

Do Some Facial Exercises. Like Blowing Air from Mouth. Hold Air in Mouth. Wide Smile Exercise, Nose And eyebrow Exercise. Try to Do All Facial Expression Prominently it Will Help You Strengthen Your Facial Muscles. Also Do Some Neck And Shoulder Exercises. Up Down, Sideways, Right Left Tilting & Turning Exercise if Neck. Shoulder Shrugging Exercise, Flexion and Abduction Exercise for Shoulder. Do These Exercises Twice Daily.

Parkinson's syndrome  possible. Consult neurologist and exercise according physiotherapists

Try to do all facial expressions exercises 10 rep atleast regularly. And further need more evaluation so visit to nearest physiotherapy clinic.