how to show the exact value of each attribute in the bar graph in ggplot2

I want to show the exact value of each attribute on a bar chart in ggplot2 and also place the names of the attributes diagonally or somehow make them not overlap when there are many...
I would like an example please solve my doubt.
I appreciate your collaboration

Here is an example with a small data set. You may want to adjust some of the settings in the element_text() function to adapt the code to your data set.

DF <- data.frame(Name = c("LontNameOne", "LongNameTwo", "LongNameThree"),
                 Values = c(25, 37, 18))
ggplot(DF, aes(Name, Values)) + geom_col(fill = "skyblue") +
  geom_text(aes(label = Values, vjust = 1)) +
  theme(axis.text.x = element_text(angle = 90, hjust = 0.5, vjust = 0.5))

Created on 2020-01-21 by the reprex package (v0.3.0)

Thank you very much, your answer is what I needed

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