Problem with images of different sizes on the product page- How can I standardize sizes?

Guys,

I have a problem on my products page. I usually use images of different sizes for a single product. This ends up creating a problem. I’ll attach an image to describe it better. What I would like to try is, limit the possible size for both mobile and desktop; For example, if I have two images of 1000 x 1200 pix and another 1000 x 1300 pix, I would like the images on the product page to appear 1000 x 1200 - regardless of whether this option “crops” a portion of the larger images.

How can I do this?

My website is: smartcasashop.com.br