25 just got shingles now I'm scared I have a serious issue like lymphoma to weaken my immune system that's caused this outbreak : (?

Herpes zoster. This is the varicella-zoster virus (vzv), and is a recurrence of your chickenpox as shingles. It used to be felt that it was necessary to have some underlying immune deficit or malignancy but this is no longer true, and totally normal people get outbreaks. Go and get the vaccine and this may help prevent or reduce future outbreaks, and unless you have other reasons, do not worry about lymphoma.