Welcome to the horse forum!
I will say what I said to another beginner: riding is a workout and it takes time (years and years) to get really really "there" with it. Meaning you can rush through and learn walk, trot, canter but when you take your time, you will do it correctly instead of "okay" and as all sports, it takes training and conditioning.
You'll get there :) Taping each lesson is what I do. It helps you to SEE the progress and keep you from getting discouraged. Your body needs to build muscle memory and to unlearn our natural instinct to curl up when we're scared because that + horses = disaster.
The more you relax, the better you ride.
Welcome to horses, best of luck learning to to ride well