Hello,
1) Theme Options > Header builder > delete Newsletter element from the header structure http://prntscr.com/qr4be5
2) Theme Options > WooCommerce (Shop) > Singel product builder > change width of sections http://prntscr.com/qr4cea , drag and drop elements/sections, delete unrequired of them.
3) This one http://prntscr.com/qr4d3y or https://prnt.sc/qr4dl6 ?
Regards