If I can't find a room in a shared apartment does it mean I'm unattractive?

I'm a working student and have been looking for a single apartment or a shared apartment for several months now but I get rejected every time because of "lack of chemistry" even though the conversation was flowing every single time, I earn enough money and I seem reliable (I've been told). I feel like I people wouldn't be so hard on me if I was prettier because I've been told that attractive people have an easy time finding a shared flat or apartment. It seems no matter what I say or how I act they just don't want me. The last time I was inspecting a single apartment the landlord seemed at least a little interested in me until everyone (8 other female prospects) introduced themselves. From then on the landlord and his wife only focussed on the pretty girl with the guarantor. Even at work or other settings I always feel like I'm cast aside and overlooked and like people actively avoid (eye) contact with me as if I have a transmittable disease. I'm clean, articulate, dress well and have a serious demeanour. Now I'm wondering if I'm just treated like an outcast because I'm not attractive enough or are there other possible reasons.

If I can't find a room in a shared apartment does it mean I'm unattractive?
Post Opinion