Hi and thanks for reaching Microsoft Xbox gamer's community. My name is Josef.
I'm an Independent Advisor and a Microsoft Xbox user like you.
Hope you're doing great today Wrbiccz
May I know if you already have set your default microphone as input device?
Open Xbox Game Bar > Go to Audio widget > Select the Voice
Change Windows default input to the headset or microphone you'd like to use.
Change Default communications input and output to the headset or microphone you'd like to use.
Scroll down to More Settings > Xbox Party Chat
Change Audio output and input to the headset or microphone you'd like to use.
Verify that push to talk is not enabled
Finally open the Xbox app
Click your profile icon at the top right corner of the page
Select Settings > Audio
Set your default Input device and output device to the headset or microphone you'd like to use.
Verify that push to talk is not enabled again
Please also double check if you have audio enhancements enabled, if yes disable it.
You can follow this quick tutorial:
https://www.intowindows.com/turn-on-or-off-audi...
Share extra feedback if necessary, I'll be waiting for your reply
Greetings from another Microsoft user