Manual install of custom components from HACS?

I’m trying to set up a new HA server to replace my old one, but I’m running into an issue with custom components…

Some of the support I need now appears to be in components to be installed from HACS. Problem: following the recommendation to install HA in a Docker container on my shared server, it has no Supervisor option. I tried to add the Supervisor, but the official install script fails. Apparently it’s possible to add HACS, but after reading 3 levels deep into the warnings (are you SURE you want to do this? check these mandatory boxes to affirm that you are a Linux and Home Assistant expert and you know how to read error logs), I decided not to attempt that if they expect it to mess up!

So let me ask this: I’ve had no problem downloading and installing custom components in the past with my old installation, so is there still some approved manual way of doing this for HACS components?

Most of the hacs components I’ve seen have manual install instructions on their repos. Which ones are you trying?

For example:

There are directions, but they seem incomplete.

Previously I used: