Bar chart in deneb to show the evolution by month

I went ahead and added this bit at line 45 to make the colors easily configurable for you. You'll want to include at least as many colors as there are months in your dataset. If you want the visual to pick the colors for you, delete these lines.

There isn't a limit on the number of months the visual can take. You'll just want to make sure that it's not so many that the visual becomes overcrowded.

.pbix file is attached.

If this is enough to get you going please consider liking this reply and choosing it as the solution. Otherwise, I'm happy to help further.