Hello, fellow Brazilian! I remember when I was your age, finishing high school and becoming really anxious about my adult life, getting into interviews, jobs and how my stutter would impact my life. What can I say is, you just learn to live with it. Don't overthink it, it's okay to stutter. Avoid toxic people and embrace the friendship from people who understand your limitation. If you have the opportunity, please try speech therapy, maybe it can help you to better understand how your stutter works.