Error installing Hmisc package in R Studio - r

Question

I'm new in R and I've been having some issues installing Hmisc package in order to elaborate a Spearman's correlation heatmap. The warning and error are as follows:
18 warnings generated.
gfortran -mmacosx-version-min=10.13 -fno-optimize-sibling-calls -fPIC -Wall -g -O2 -c bilinear.f -o bilinear.o
make: gfortran: No such file or directory
make: *** [bilinear.o] Error 1
ERROR: compilation failed for package ‘interp’
* removing ‘/Library/Frameworks/R.framework/Versions/4.0/Resources/library/interp’
Warning in install.packages :
installation of package ‘interp’ had non-zero exit status
* installing *source* package ‘polspline’ ...
** package ‘polspline’ successfully unpacked and MD5 sums checked
** using staged installation
** libs
gfortran -mmacosx-version-min=10.13 -fno-optimize-sibling-calls -fPIC -Wall -g -O2 -c allpack.f -o allpack.o
make: gfortran: No such file or directory
make: *** [allpack.o] Error 1
ERROR: compilation failed for package ‘polspline’
* removing ‘/Library/Frameworks/R.framework/Versions/4.0/Resources/library/polspline’
Warning in install.packages :
installation of package ‘polspline’ had non-zero exit status
* installing *source* package ‘VGAM’ ...
** package ‘VGAM’ successfully unpacked and MD5 sums checked
** using staged installation
** libs
clang -mmacosx-version-min=10.13 -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG -I/usr/local/include -fPIC -Wall -g -O2 -c VGAM_init.c -o VGAM_init.o
clang -mmacosx-version-min=10.13 -I"/Library/Frameworks/R.framework/Resources/include" -DNDEBUG -I/usr/local/include -fPIC -Wall -g -O2 -c caqo3.c -o caqo3.o
gfortran -mmacosx-version-min=10.13 -fno-optimize-sibling-calls -fPIC -Wall -g -O2 -c ei.f -o ei.o
make: gfortran: No such file or directory
make: *** [ei.o] Error 1
ERROR: compilation failed for package ‘VGAM’
* removing ‘/Library/Frameworks/R.framework/Versions/4.0/Resources/library/VGAM’
Warning in install.packages :
installation of package ‘VGAM’ had non-zero exit status
ERROR: dependency ‘interp’ is not available for package ‘latticeExtra’
* removing ‘/Library/Frameworks/R.framework/Versions/4.0/Resources/library/latticeExtra’
Warning in install.packages :
installation of package ‘latticeExtra’ had non-zero exit status
ERROR: dependency ‘latticeExtra’ is not available for package ‘Hmisc’
* removing ‘/Library/Frameworks/R.framework/Versions/4.0/Resources/library/Hmisc’
Warning in install.packages :
installation of package ‘Hmisc’ had non-zero exit status
ERROR: dependencies ‘Hmisc’, ‘polspline’ are not available for package ‘rms’
* removing ‘/Library/Frameworks/R.framework/Versions/4.0/Resources/library/rms’
Warning in install.packages :
installation of package ‘rms’ had non-zero exit status
The downloaded source packages are in
‘/private/var/folders/8b/43x_77fx1p73gb68h2418m5r0000gn/T/RtmpIhACeD/downloaded_packages.
PS. I'm also a Mac user, and I've trying to solve it as some of you guys have suggested in other similar questions,
I've used:
-adding dependencies=true in the script.
-installing tydiverse package
-installing backports