I'm curious @RezaLoghme - how much experience do you have using a TLR? Does any of that experience include photographs of people?
Yes with a lowly Rolleiflex 3.5 (the very early one, let me check the model designation). Oh, and a Lubitel.
And did you use them to take what might reasonably be described as portrait photos of individuals - using the expansive definition that most people photographers are likely to be comfortable with?
Because I did that for years, and had many satisfied customers/subjects. And the 80mm lens was frequently mounted to my C330 when I was doing that - in the context of wedding photography, you often go with the lens on the camera, rather than stopping to switch.
I understand having a preference for one style of working or equipment over another. But I would never discourage anyone from at least trying to use their very fine Rolleiflex camera to do something that many, many photographers have done very well indeed.
This thread started out with a request for help from someone who actually wants to do just that. "Get another camera" or "you are unwise to do what you are doing" isn't very responsive to the question asked.