Thank you for your answer and help! I did what you suggested to me but now ask me for another "package" I did the same (install...)
install.packages("bibliometrix")
trying URL 'https://cran.rstudio.com/bin/macosx/contrib/4.0/bibliometrix_3.0.4.tgz'
Content type 'application/x-gzip' length 806746 bytes (787 KB)
==================================================
downloaded 787 KB
The downloaded binary packages are in
/var/folders/pj/qpqdmd2j0dzdtybbzpqplc2m0000gn/T//RtmpKs6yOL/downloaded_packages
library(bibliometrix)
Error: package or namespace load failed for ‘bibliometrix’ in loadNamespace(i, c(lib.loc, .libPaths()), versionCheck = vI[[i]]):
there is no package called ‘stringi’