Bank Cashier Interview and I’m super nervous

I got an interview at a bank tomorrow and I’m really anxious and nervous. Like I’m struggling to be composed as interviews have not been my strong suit but I’m currently in a role which involves a lot

I got an interview at a bank tomorrow and I’m really anxious and nervous. Like I’m struggling to be composed as interviews have not been my strong suit but I’m currently in a role which involves a lot of customer interaction over the phone and doing a lot of calculations. Any tips and advice would be very much appreciated.