Difficulty installing rails on Mac Mojave

I am trying to install rails using bash and it will install, however when I go to check the version it says that rails has not been installed. If I locate rails it finds it in my Homebrew directory. I downloaded the rbenv manager too but when I -v I don't get my latest version. If I try to run a rails command it just says rails is not installed on my system.

Short of deleting everything, I've tried to update all the necessary components. One thing I think is happening is that my file pathways are all mixed up. However, I am brand new to programming and seriously have no idea what I'm doing. Please help.