I am struggling with finding a way to add a line to every x variable which I define as name in my df by using ggplot on a barplot with multiple columns. I also tried to do this in Excel, just to se if it was possible in VBA, however, I did not manage to do it in excel neither and when trying to do it in R, I get the same problem (therefore I am actually not sure whether or not it is possible).

The barplot I have made using ggplot is