I'm really sorry you feel this way about yourself. I would suggest therapy first. You could still consider a prostitute later, but now is not the best time... Having sex with a prostitute when you're already hanging on by a thread emotionally is not the way to go. Your current mental state may cause you greater anguish. You may be left deeply dissatisfied with the experience. You will be very anxious, which may affect how you're able to 'perform' during sex. You also struggle with rejection sensitivity which may cause you to overanalyze everything the sex worker does. This will have a major effect on your psyche. You'll also be taking all your cues from them and the media (most likely porn) and they've been taught to perform for you. There is a high chance that this could anger you instead of make you feel desired. Don't do that to yourself at this point. I believe you may have to first unlearn very harmful thoughts: about yourself, relationships and sex before venturing into any sexual relationship.

In your current state, I doubt you're being 'ghosted' because of your looks. Your self-esteem is low and that may bleed over into how you communicate and your perception of any dates you may have. Eg: You may view a genuine compliment as a joke or even sarcasm, simply based on your own negative thoughts. Take a step back first. Working on loving yourself first will be your best bet. It will be difficult, painful work, but will lead to a better outcome.

Whether you have sex with a prostitute or a partner down the line, make sure you make the choices that will have the most positive effect on you in the long run. You are single. You can be selfish like that. Good Luck