Terminal commands

Hello there. I am a new user of RHEL 8, coming from the universe of Debian / Ubuntu. I have been very satisfied with the stability and the quality of my new OS - surely the most polished of all the enterprise operating systems out there (I have checked both Ubuntu LTS and SUSE Linux Enterprise Desktop).
I am neither a developer nor an IT specialist. I am just a normal home user who wants to use a professional and stable operating system. I would like to ask the following:
1. Is the command "sudo yum update" the correct one for updating my system?
2. Are there any commands for cleaning up my system (like "sudo apt autoremove" and "sudo apt clean" in Ubuntu)?
Thanks in advance.