Can muscle twitches for years just be bad anxiety? mri came back norm. so no tumor.

Muscle twitches: Yes. Anxiety is probably the most common cause of chronic muscle twitches, particularly around the face, head, and neck. If there is not a progressive, worsening course, and if there is no pain or weakness, then there is no need to consider other conditions like multiple sclerosis, infiltrative disease, or degenerative disease.

Yes: Most probably benign fasciculation is the diagnosis caused mainly by stress.

Sarcopenia: Loss of essential muscles will cause twitching - check bia and find out your lean muscle mass vs total body and see whether this is normal.