How can I request my Facetime app to have access to microphone?

Hello ymiron25!

Please go to: Settings > Privacy & Security > Microphone. Now, see if the FaceTime app appears on the list. If so, turn ON the switch next to it.

I hope this is helpful. Good Luck!

In that case, please Contact Apple for support and service, for further assistance.

I apologize for my late reply. Unfortunately, your thread got lost in My Subscriptions.

I wish you the best of luck in resolving this issue!