Amplify effect is not working, for Apple 14 plus users

Hi, I found this post on this same forums:

It says to convert stereo to mono, import audio file in audacity, open Tracks menu > Mix > then select first option (stereo down to mono)
When I did this and exported file as AIFF file, then played it in windows media player, it sounded exactly as how original input file was sounding in iphone 14+, like an insect buzzing.
This is the exact same problem I am facing on iphones, now the same is happening on windows also if the audio is converted to mono.
This is what needs to be fixed somehow.
Thanks