It's nobody's "fault" when it comes to rejection to a certain point.
Are you talking about normal instances of rejection for a man with a healthy sex/dating life.. or constant and consistent rejection of a man who can't maintain a healthy sex/dating life?
There's a huge difference in the dynamics of the two
I'm talking about in most cases. Of course there are instances where a man can be at fault. If a man is harassing a woman, then he is at fault. If a man has poor hygiene or is unkept, then he is at fault. In the aforementioned instances, that man has control over how he presents himself as well as how he behaves around others.
Other than that, no person should be at fault for being who they are. Also, it is a given that everyone isn't for everybody. But, that doesn't mean that people should mistreat, belittle or disrespect someone just because said person may not meet someone's criteria of what they deem suitable to date.
My whole position is simple. Some people struggle connecting with others. But, said person has a chance to change their circumstance. It could be as little of changing his surroundings. Moving to a different city, state or even could try can garner different outcomes. Just one example..
I am just not into the whole shaming culture of vilifying people for being not having a bunch of sexual conquests. What is meant to be will be and IMO, some rejections can be a blessing. Said person could be dodging bullets for all we know??
I encourage any person who may be struggling to be resilient and patient. When the time is right, that special person will come their way. In the meantime, take care of business and focus on their purpose.