When facetiming or any video chat with a different app the audio cuts out immediately when any other background noise is picked up making the call impossible to have with any sort of background noise. I have a IPhone 11 pro max

Greetings J_Skiez,

If you are having an audio issue with your iPhone, begin by following the guidance found here:

If you hear no sound or distorted sound from your iPhone, iPad, or iPod touch speaker - Apple Support

"If you want to try more steps on your own

If you prefer, here are some more steps you can try on your own. After following these steps, you might still need to contact Apple Support to discuss service options.

1. Remove all screen protectors, films, or cases from your device. 
2. Check the speaker opening to see if it's blocked or dirty. On iPhone only, make sure that the receiver isn't blocked or dirty. 
3. If necessary, clean the speaker or receiver opening with a small, soft-bristled brush. Make sure that the brush is clean and dry.
4. Go to Settings > Sounds (or Settings > Sounds & Haptics), and drag the Ringer and Alerts slider back and forth a few times. If you don't hear any sound, or if your speaker button on the Ringer and Alerts slider is dimmed, your speaker might need service.
5. If you hear sound, try making a call with your iPhone and turn on speakerphone. On iPad or iPod touch, make a FaceTime call. If you still can't hear, or hear static or crackling, then your network or reception could be the issue. Try to call again later, or from a different location."

Take care.

Thanks for reaching back out, J_Skiez. From here, we'd recommend reaching out to Apple Support with help from the previous message we sent.

Regards.