How to evaluate a doctor with whom you have never dealt?

A doctor is chosen by recommendation only.
When we came to live in this part of the country, it was a constant questioning of the people we knew: family doctor (GP), specialist doctors, dentists, etc. I had no luck with dentists, as I have written before. But the two GPs I've had found with contacts - the previous one who died a year ago still working age and the current one, I'm not questioning their knowledge and skills, could be better but could be a lot worse too. In addition, there is a shortage of family doctors in Bulgaria as well. What worries me is their lack of interest and concern for me as a patient. At the same time, I have witnessed a totally different behavior on their part towards locals who they know. It's just that here I feel like I don't speak the same language with these people, we just don't get along. My partner said yesterday that it's more about frequencies and that I don't click with these people here, or vice versa, as if in a doctor-patient relationship it's acceptable to have things like "I like"-"I don't like" this person.
Because on Sunday, I still thought that maybe if a doctor is called to be a doctor, he will "immediately rush to help you", but if he chose the medical profession for selfish reasons - because it is prestigious, it can bring money, connections, etc., he "will not do anything until you offer him some benefit". However, it is possible that it is much more than that, and that there are quite a few other additions to the reasons (which seem unacceptable to me).