Thumbnails stupid scaling and WooCommerce bugged

I am wonder why thumbnails are scaled by taking a snapshot from the middle of the image instead of just scaling the whole image down? I am losing so many good parts of my images when showing their thumbnails.

Also, when I am showing products with WooCommerce, none of the product image is scaled, every image is full size and the products has a bullet dot to the left of them and everything just seems bugged, like the CSS wouldn’t really load…