Hello,
1/ Please read this article https://xstore.helpscoutdocs.com/article/89-product-images
https://prnt.sc/Q5mNWncDO-OU https://prnt.sc/3bdw2MmDAnY3 , do not forget to regenerate thumbnails to apply changes.
2/ You can activate Single Product Builder via Theme Options, then you will be able to place sections and elements depending on your needs and change the width of them.
Regards
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