Karaoke singing (Live) Tips

I have been singing with the choir for many years. I actually have a wide range, but I sing w altos even though apps says that I am Mezzo and Sopranos. I've been to karaoke for sometime now, but I can't seem to sing the same. Can someone evaluate my video and make recommendations on what I should focus on? I feel like it's mostly the vocal cold, cold cord relaxation because I sing better when I'm at home recording etc., etc. 

Hi, Bo! Have you submitted a video for feedback? Here's the page to do so (found in the site menu): https://www.30daysinger.com/feedback.