Do you think it is a better option to put the site-menu in the header for user experience? [on hold]

Hi i am trying to create a good experience for my clients. This is a demo of my site. My question is what is better regarding user experience when it comes to the site-menu?

Should i rather put the site-menu in the header or can is it okay to keep it below the hero-image regarding user experience?

I hope my question is right here, i am new to UX.