Images on Product page

[IulianManea]

Hello guys, I need little help here with images on product page, i need to resize the size of photo, is too big and I don't understand why when i go on one product, after is loading the page to see all about that product, the photo dosen't stay still to the first photo, is change automatically. I really need to resize the photo and to make to remaing first photo selected, after when the customer choose what he want can change the variant and of course change the photo automatically. Let's use this for example https://onebeastgarage.com/collections/cars-1/products/ddpai-dash-cam-mini-5-4k-2160p-hd-dvr-car-cam...    . See have first image that camera with silky material, but after you enter on page is change automatically the photo. Thanks for help, the Theme is Erikson, I search the answer for 2 h but I don't find someone with this problem.

[IulianManea]

Thanks, but i asking how, I don't find where i can do something