Page layout; menu position

I'm having trouble changing the page layout, with 2 primary problems. 1/ I do not want the menu on the left. I just want a hamburger menu at the top, and can't find a way to change the layout. And for some reason hte hamburger menu does not always appear at the top right. 1a/ The menu on the left interferes with content. 2/ I do not want the "Archives" and "Tags" sections to appear on Pages, but only on Posts. I've read the instructions, but can't find a way to fix these issues.