Anxiety is uncontrollable

I am worried about returning to the university city and my roommaets. I am concerned about starting work, leaving my sister and mother behind, and dealing with my agoraphobia and the high cost of groceries. Additionally, there is a concert happening for three days during which my sister will likely be staying at the apartment where I have an interview. My roommates are quite unpredictable, and this situation could make me very anxious, potentially affecting my performance at the interview. It worries me to think about navigating these challenges while also managing my agoraphobia and adjusting to new environments. The anxiety is causing physical symptoms like acid reflux, odd behavior, and difficulty communicating normally. I feel like I might be overthinking everything. Was it better when I lived there before? Perhaps I am just overthinking this, and I was mentally healthier then compared to now here. I struggle to act normally around my parents and sister, find texting difficult, and doubt whether I should have applied for the new job or stayed in my previous location.

Edit: Now my sister is feeling nervous as well, making me wonder if it might be a good idea to rush back to university city. Maybe things were better there?