Cost not decreasing

[arctic hare]

How come my cost isn’t decreasing? It starts at 0.69314 and stays at that throughout all the iterations (decreases by like 0.000001 each 100 iterations). My layers are 12288, 20, 7, 5, 1 and I've tried learning rates of 0.1, 0.002, 0.00001, and 0.0000001. It’s a monkey vs gorilla binary classification model that uses 2000 images to train that are each sized 64 x 64.

I can post my google colab if needed because it has all the code

Just really confused because I've been trying to figure this out for a long time 😔