Space on the right side and space on the bottom (in pages)

I am having some issues with gaps/spacing on this theme. I created a contacts page but it seems to me that the right section is always empty and cannot be filled (even in visual). Also having the same issue with the gap at the bottom of the page which when I reduce, reduces the homepage widgets. Anyone know any solutions on how I can make the right space be filled so its proportioned to the website? and also how to remove the space at the bottom for pages?

heres my website if it helps:

Hi @geniustudios,

I hope you are well today and thank you for your question.

I tried to visit your shared site to see the issue but your site is not accessible and displaying the error message.

Could you please make sure that your site is accessible so that i can help you?

Best Regards,