I'm happy to help and share the steps you can take to resolve your query.
Once you have the report open, you need to hover your mouse pointer to the vertical line that divides each column. The mouse pointer will change shape, and this indicates you'll be able to resize each column as you see fit.
Another thing to note, you can click the small Gear icon on the same report page. It allows you to add or remove columns on the report, to meet your needs.