I have a data frame, which consists of several coordinates in the UTM33N system. For better understanding I want to convert them into the "normal" WGS84 / GPS coordinate system. There are some Excel spreadsheets and converters online, but a simple R command would be way easier to convert all at once. Unfortunately, everything I can find online like the sf package etc looks super complicated to me since I'm a total beginner in R.
Any ideas or alternatives?