@randahl it might have to do something with the title.
I am not sure of your audience but I very rarely open videos with clickbait titles and thumbnails (like AI-generated suggestion here, only thing it misses is lightning) as they usually offer little substance and are rehash at best and ragey slop at worst.
For me your original thumbnail is looking good, standing out in the usual mess even but I'd change title to something more... informational? Something that you'd expect to see as good newspaper headline. Or at least expand it a bit.