I doubt very much that you are repulsive to men. But right now it seems that your kindness and gentleheartedness and willingness to overlook things is giving men the impression that they can say whatever they want and come and go as they please in your life.

So I therefore propose an experiment: The next time you meet a man online, or in person, follow the ideas of ValentinaVVV.

If a guy does not get back to you promptly, drop him at once.

If a guy makes sudden and implausible excuses, drop him at once.

If a guy is unreliable, and doesn't do what he says, drop him at once.

If a guy is squishy and/or evasive and/or vague ("We'll work something out"), drop him at once.

No second chances.

You are a trustworthy and worthwhile woman; don't waste any time on guys who show themselves to be untrustworthy and not worthwhile.

Play hardball.

Do that for let's say 6-8 weeks in all places/sites where you meet men. Then let us know how it turned out.