Duolingo microphone not working | SOLVED | «Microphone is off/will turn back in an hour»

🗺️🌐 «Switch on Closed Captions for better understanding» I started learning Russian through a few months back. Because I've a full time job, I couldn't spend much time learning Russian. But as I'm self isolated at my home nowadays in view of the current situation I tried to solve the problem with my Duolingo app which had been haunting me for months. I knew that there's some solution to it but my job wasn't letting me find that solution. Being at home for days, and spending much time on upgrading my Russian skills, I repeatedly encountered the same error which I neglected back then i.e., «Microphone is off. Will turn back on in an hour» or «Hmm... that doesn't sound right». But this time I couldn't let it go. So, I searched on YouTube, but I couldn't find any videos regarding the matter. Though, there's some content on Google/Bing and other search engines. I concatenated the studies from each search engine and came up with this video. Now this will never haunt me (and if you are facing it; same goes for YOU!) «You'll see in the video that a few times I failed getting the Russian words right. It was partially my pronunciation fault, but partially a technical fault. You can see the HEADPHONE JACK icon in the notification bar, which is showing the input without MIC (because I didn't plug the headset correctly, although my headphones have MIC too). Because of that, my voice was being fed through phone's internal MIC and thus there was a slight error as I was speaking into my...