R has problems with the non-ASCII characters in your package library path, I recommend you to set your package library in a different location.
You can change the default library folder by setting your R_LIBS_SITE environmental variable on a .Reviron or .Rprofile file. For example:
# In a .Renviron file you can set it by adding a line like this one with the desired location
R_LIBS_SITE="C:\\Program Files\\R\\R-4.1.1\\library"
For a more detailed explanation, you can read this blog post