GitLab Runner Managed App installation

As per the documentation for Managed Apps (GitLab Managed Apps | GitLab), one-click installations have been deprecated.

I am trying to install the GitLab Runner via Managed Apps as part of this, as also I want to be able to configure the Runner that wasn’t previously possible via one-click installations.

Finding a GitLab tutorial on this (Kubernetes Cluster Management Project - YouTube) it states that you have to run a pipeline for these managed apps to be installed. However I feel as though there’s a catch-22 here as I need the one-click installed GitLab Runner to be installed before I can install the Managed Apps GitLab Runner?

Unfortunately I haven’t found a place where I can easily follow documentation on how to get this all setup.

Thanks in advance!