Video review design issue

1. I have posted a video of one test product. see here inside the reviews – https://neon.expertdeal.nl/demo/product/new-test/

Here I see a lots of design issue :
– A huge top bottom space – https://prnt.sc/IoF2iHFeAWRw
– https://prnt.sc/lyqKmiLcMTYX
– https://prnt.sc/astTGq-z6P9H

2. Where I can adjust the uploaded image sizes. E.g I have uploaded big size o0f images, but in frontend images are showing a small size – https://prnt.sc/QJHFSwHzhwJz