@ToxyPoxy Thank you all for the quick response! 🙂
After I woke up I tried to reinstall UT 20 and that did not do anything so I installed older version UT 16.0 with the same result. I tested the camera app and the sound for the video was not working.
This issue is now solved, and all I had to do was turn off bluetooth and restart my phone (why on earth is bluetooth and location on after installing UT should be off) 🙂
After running search on the web I saw many people had some issues with the microphone on the Pixel 3a.
So I found my solution in this article:
So I hope this will help someone in the future.