Are you able to share a twbx (packaged workbook) displaying what you've tried so far?
As Amber mentioned a workbook would be awesome! It allows the Community to understand better what you are trying to visualize and give better assistance.
One resource I would like to share is our Visual Analysis Best Practices whitepaper. This whitepaper discusses the best times to use a line graph vs. bar graph vs other types of graphs based on the data that you are attempting to display.
Hope this helps!