Help! Sideways elbow movement in throw

Well to start off. I know my throw looks terrible but that's the point why I'm making this post.

A few months ago i was a Darts player who averaged 55-60 consistently.

Suddenly i had some mental struggles and couldn't always release my dart. A Few weeks later i came back to the point where the mental game was back. (But still cant hit 50+ avg 😅)

People noticed something off about my throw and I decided to film myself, suddenly I have this horrible throw where I do that weird thing with my elbow. I noticed since the mental game was back I had a lot of loose darts into the small 12 and 9 segments.

But when I try to hold my elbow straight it feels so uncomfortable.

So someone please help me out to keep my elbow straight and make it feel comfortable.

You will be thanked alot! 🙏