There's no need for hostility.
TL means Turn left.
TR means Turn Right.
U means Up.
D means Down.
These instructions can be found within the notebook.
I am facing the 2 Green 1Red, I do TR TR D then U then the only option is D so I am stuck
Start from looking down at the green square at the entrance.
i see a red square on the floor no green
Look back at the entrance from afar, click the red square, then hold the notebook and look down when you're standing under it.