Column bars too thin and big gap between weeks on chart - how do I make the bars thicker and/or reduce the gap between the weeks. Sales rep data per week

I need to create some charts to show the sales reps leads per week - problem is the gap between my weeks is too large, and the columns themselves are too thin. Any tips on how to either reduce the gap between weeks or reduce the thickness of the columns would be much appreciated.

Image of the chart in its current form.