troubles with RVM and OpenSSL

It's well described on ArchLinux wiki:

Ruby versions older than 2.4 require OpenSSL 1.0 but RVM will try to build them with OpenSSL 1.1.

So you can do (easiest):

$ rvm pkg install openssl
$ rvm reinstall 2.3.5 --with-openssl-dir=$HOME/.rvm/usr

You can see more solutions on ArchLinux wiki.

OP actually saved my day! In my case:

$ rvm pkg install openssl
$ rvm remove 2.4
$ rvm install 2.4 --with-openssl-dir=$HOME/.rvm/usr
$ gem install bundler

Try this:

rvm get head
rvm pkg remove
rvm requirements run  # if brew gives you warnings about formulas to install, run "brew install" for each before moving on.

rvm reinstall [the version you need (i.e: 2.0.0)]