audio effect patch controlled by midi

Hello! I'm new to max and I learned some absics from workshops and youtube tuptorials. I'm trying to tackle a personal project now, which I would be using for my own production which is a key tracking EQ.

I created a midi track and an audio track which both send their signals to a new track that contains the max device. The basic features are working for now with some bugs but sometimes the device stops reading the midi input. I'm aware that this isn't the best option to do this so are there any tips or tutorials on how to do it?