No mater what I do it only prints on about 1/4 of the page. Even when I click on the fit to page option in print set up.
Details on printing depend on details of your sheet and on the relationship of number of rows, columns and their respective height/width relation. Thus there is no real good advice possible without further infiormation. Best would be to provide (upload) an anonymized test file (Keep everthing as is - but replace content of filled cells by dummy data).
One common problem: No proper print range has been defined through Format -> Print Range -> Define or Format -> Print Range -> Edit