How do I use my headphone button to launch chat GPT as my assistant

I've tried Mack Droid and plenty of other apps. No matter what I do I can't get this to work. If I change chat GPT to my voice assistant when I double click my headphones it no longer brings up the voice assistant, voice assistant will only come up if I long press the home button, well that sucks because there's no way I can send a long power button signal for my headphone. So I change it back to Google Assistant and try to use Mack Droid to automate the step that whenever I open Google Assistant it'll just launches chat gpt. That didn't work either. When I press test automation in the app it works but when I actually try to execute it Google Assistant just opens and nothing happens. I can't figure this out. What should I do