Your current heating consumption

I deliberately did not ask for the specification in kWh for gas because it also strongly depends on the gas composition (calorific value and correction factor)

Exactly for that reason.
kWh = m³ x calorific value x correction factor.
Therefore, only the specification in kWh is meaningful for comparison.
But be that as it may, small inaccuracies are certainly not so dramatic here.

Yes, because it is not representative anyway... even the shape of the house alone determines an excess or reduced consumption...

It's not about compiling a fully comprehensive compendium based on empirical research

Obviously, the values depend on many things, heating efficiency, configuration, thermal comfort, occupants, ambient temperature, insulation, material mix, and so on and so forth...

However, it can serve to obtain reference values that at least provide usable points of reference to see where you rank yourself. For example: We currently use around 25m³ of gas. [Energieeinsparverordnung 2016]

too much for my taste

after 1 year, we took the meter reading 2 weeks ago.

air-water heat pump, Kfw70 with about 200m2 living space and 248m2 usable space, which are also currently still being heated because there are no doors, including hot water.

room temperature at least 23 degrees, rather 23.5

5800 kWh electricity consumed, of which about 1000 kWh are still from the drying program that ran for about 14 days but was then stopped because there is no screed in the house.

We will not manage with the estimated 20,000 kWh (in natural gas) this year. The house was built in 1997, timber frame construction, details largely unknown, quality in any case rather poor. Of the 200 m² living space, usually only 50% is heated and only in the afternoons + evenings and on weekends. Room temperature 20 °C

As an example: We currently use about 25m³ of gas. Energy Saving Ordinance 2016

Screed drying? Multi-family house? No windows?
25m³ would otherwise be really bad That really should be stopped

m³ does not say anything about the energy content, since two regionally different factors still have to be considered. Therefore, the comparison is not valid. kWh would be more precise, but of course not everyone knows it if the factors are (still) unknown.