A question about spacing (page breaks and measures)

Hi,

I'm fairly new to the Musescore software and I found an awesome score I'm trying to make some minor adjustments to (notation, playability etc). The problem I've come across now is that there are page breaks I can't seem to get rid of and some individual measures are spread across the entire page making them a lot harder to read.

I've done a lot of searching on the forums but I can't seem to fix it with the suggestions that were posted. I have uploaded a screenshot to help visualize the problem I'm having (the second page only has 3 measures and measure 32 is stretched across the whole page). I can also upload the score if that would help at all.

Apologies if this is an easy fix but any help would be greatly appreciated!