Downloading images from Youtube?

Question

YouTube

Hello, please tell me how to upload images one by one, if one did not load, then load the second one, etc.
There is an array of 4 addresses (video covers from YouTube), for example:
var resolutions = ['maxresdefault.jpg', 'hqdefault.jpg', 'mqdefault.jpg', 'sddefault.jpg'];
First load the first maxresdefault, if it does not exist or it has not loaded, then load the second, and so on. Thank you if someone writes a short snippet.

Answer 1

Is this a TOR or a question?
If this is a TK, then there is not enough specifics.
If it's a question, then it's missing the code you wrote.

Answer 2

https://codepen.io/mumus/pen/YdBbYw
This way it will be much clearer. How to make it so that if there is a picture then interrupt the chain?