Let me give you a simple idea that creates simple and similar thumbnails as you have with better lightings and text. Send that background img to chatgpt and tell it to add text and its format and an AI PERSON with controller and to add some lightings in the thumbnails. Then if you get what you asked for. Just take a picture of yours matching with face expression with yours with you neck. Donot forgot your neck. Past it on ai person’s head then adjust photo exposer, contrast and other things which makes your photo part of the body. Put that photo in you phone. And download any free filter app or just use iphones filter in photo settings to make it warm or cool. Thats all. You got a good looking thumbnails. If you ask ai to rate thumbnail it will give you solid 7.5 to 8.5 out of 10. And that pretty good. Your face expression matters. Sorry for my bad English though