I cannot figure out what you mean saying ” can’t change the image without scroll.” You can change the image by arrows, clicking the thumbnails. How do you need it should be?

If I dont use an image with tall ratio the problem solved. but in the screenshot for clicking thumbnail you must scrol from first position to change the image and for veiwing image must comeback to see all area of image. I say you must limit the height of cover image for availability of all element of product image and name and description area.

If you try any slider/gallery you will see that bigger image takes more hight and smaller less. All sliders and galleries work in the same way. So the only way out is to upload images of equal size.

you say if I find a tall image I must cropped it to wide image manually. or cropp some of area in image.
but I think it’s standard strategy to cropped and correct only cover image. image gallery must have ability to show all image ratio.