See if this helps. You didn't say what you wanted to plot, so I just did visits vs. day of the week.
Also with Excel 365 you can do box plots without R.
When I imported your data to R I named it traffic (so you will need to change that part of the code to what ever name you used). I keep your headers the same as you had.
This line of code is just to put the DayofWeek on order for the graph.
traffic$DayOfWeek<-factor(traffic$DayOfWeek,levels=c("Monday","Tuesday","Wednesday","Thursday","Friday","Saturday","Sunday"))
For the box plot this would be the code.
boxplot(traffic$Visits~traffic$DayOfWeek,xlab="Day of Week",ylab="Visits")
View attachment 83844