Xiaomi Redmi Note 12 Aux Port Not Working Despite Multiple Attempts to Fix It

I bought a Xiaomi Redmi Note 12, but the USB headphone jack (aux port) hasn't worked since the day I got it. Three different techs have looked at the phone and couldn't figure out what was wrong. I even tried to make changes to the settings, but nothing worked. Having a phone that doesn't work with such a basic function is annoying, especially when you've tried several fixes. Also, I saw that platforms need a minimum of 250 characters when I tried to send this report. It's not necessary to use that many words to explain everything, and this makes the process harder than it needs to be. These steps are getting in the way of getting my phone to work right.