• The Big 5 personality traits may predict relationship status, particularly singlehood.
  • Introverted people are more likely to be involuntarily single and thus more likely to experience loneliness.
  • Individuals who are single by choice tend to score high on the personality trait openness to experience.

https://www.psychologytoday.com/us/blog/finding-new-home/202202/personalities-voluntary-and-involuntary-singles

These are absolutely not surprising results and indicate that being in a relationship is more dependent on the person's own behavior. This may be a hard pill to swallow for many incels/involuntarily single people: that their own social behavior counts more than external factors like looks.