ZweiEuro

Depends on your country and the law. In the EU AFAIK this would be classified as medical and illegal to query without your consent. And I’ve never heard of anyone who isn’t a doctor getting such a request.

Doctors usually get a ‘required to be vaccinated’ thingy, but else? Never heard of it.

Ah, I accidentally read over that you used free -m.

By top 3 services do you also include any programs ? For me htop itself already consumes 10 MB, what other processes are running ?

Are you certain its actual ram usage and not reserved ? Usually when a program requests huge amounts of ram it is not given it until it actually writes to it. Try running free and check what it says.