Did I need hmland when using HomeMatic HM-CFG-USB2

Hey there. Sorry I did not find a final solution for my case.

I own 5 climate HomeMatic devices and I want to control them with my ha. I own a HM-CFG-USB2 and I want to use it as a central again.
A year ago I use hmland and it worked fine. Now I setup all my homeassistant stuff again and I find some news about something called OCCU. They used this with Hassio and a modul called RPI-RF-MOD.

Sadly I find no HACS integration for OCCU or for BidCos.

There are so many changes in this year, I just want to know if there is a better solution for this.

My config:
~HA as Docker (homeassistant/raspberrypi4-homeassistant:stable)
~Raspberry-Pi 4 with 4GB ram

hmmm. I am still unsure what is is the best to use software combination to use HM-CFG-USB2.

Any user here who can tell me about his/her configuration?