Week 2 A2, accuracy value lower than expected

Hello, I am writing because when testing the Emojify V2 model the accuracy was lower than expected and I would like to know how I can improve it.

My code gives 0.76 accuracy also. Do not worry about it.

If the training set accuracy and test set accuracy are too different, either the model is overfitting the training set (needs more regularization), or the model is not complex enough to work in a general situation.