Toke metilfenidate for 1 wk 1 year ago. My life changed. Panic attacks, fear, stress, depression. I'm not the same. Tried everything for mind. Wat2do?

Seek help. Methylphenidate can certain increase anxiety is some people, but a one-week trial should not have permanent effects of the type you're describing. Find a psychiatrist who will listen to your story and suggest ways of getting out of the hole you're in. There is help out there.
Methylpphenidate. Ritalin (methylphenidate) is a non-amphetamine stimulant for adhd, can cause anxiety at high dose. Consult your doctor for medications to combat anxiety.