Scared I won't be able to breastfeed!

I know breastfeeding isnt the only way to feed a baby, but I really want to be able to do it. I'm terrified that I won't be able to. Like I won't make enough milk, or be able to get the baby to latch correctly or something! I have nightmares about it and wake up feeling so down... I know it's probably ridiculous to most of you but I'm pregnant with my first and it's important to me 😥 is this normal to be so scared about? Can someone give me some input? I know wic said they can help with latching practice, but what do I do to make sure my supply is enough? How often will I even need to feed her? What food/drinks do I avoid while I am breastfeeding (or trying, at least)? This whole thing is new and scary and also beautiful and intriguing.. Any advice on the subject is greatly appreciated. And yes, I know it all boils down to "fed is best", I just want to do this because I feel it is important for my baby and if I can't do it I will make sure she is still fed and healthy no matter what! ❤️