You can’t go off script until you’ve mastered the script.
This is a young offense where everybody is still thinking too much. You need an unconscious understanding and trust about what every other player is doing before you can improvise. They need time and repetition to build confidence in each other.
The good news is that we know who is playing every position on offense next season unless they dump Lock. They can all spend the time to build that chemistry. Can you remember the last time that happened?