Believe me, I feel your pain. Love my Bernina needle threaders but my TL 2010 is the pits. And because the eye faces the left instead of straight on, like every other machine’s doubly bad.
In fact, just this afternoon, after the fifth time trying to make it work, I watched a video, finally got it threaded 🙄. But honestly speaking, it was just the law of averages and my time had finally arrived 🤷🏻♀️