how can i presude my mom that i can Магазин at hot topic

Be an adult and have a mature, civil conversation with her. Let her explain her reasoning for not letting Ты Магазин and, calmly and intelligently, explain why Ты think Ты should be allowed to Магазин there.

hmm if your parents dont let Ты Магазин there they may have a good F-ing reason