Would someone please explain this to me?

It could if you are all the beautiful things they aren't and opposites attract and the way you described yourself you must be beautiful.

No disrespect intended but are you also a doormat who can’t say no? Predators tend to seek out those types because they can take advantage of them.

After reading all the other responses, I'm going to throw in my two cents worth, because everyone seems to think in some way you do this to yourself.

The fact is, victimizers are very good at recognizing the vulnerable ones. It's like we have a big red V tattooed on our forehead. It says we are gentle, and likely to fear being judgemental, because we might offend the person. So, they play to that. If you're accepting, they start to open up and show a vulnerability of their own. And once they've got you hooked, they begin to abuse your gentle nature and by then you're kind of trapped because, if you start to back off, they accuse you of being the trickster, and lay the guilt on you.

If, in the beginning, you doubt them and question their motives,,they put on the kicked puppy act and start in with the guilt, immediately, because they see that you will bend over backward to appear unprejudiced.

We don't ask for this, but we do attract it by being too kind to call them as we see them. Try this. One red flag is all it should take for you to say back off, you're getting too close to quickly. You will then see them bring out the big guns. Playing on your emotions. Accusing you of misunderstanding their intentions. They may apologize, but they will not back off graciously. They will try to make you sorry for injuring them. Our kindness is our weakness. We become victims because we don't want to be the ones who hurt people. Narcissists, sociopaths, and psychopaths are very good at spotting the vulnerable.

We attract what we think we are worth deep down inside.

Looking in wrong places

You need to rethink this being nice to everyone. You are not obligated to be nice to these kinds. Adjust your radar. Learn to say get lost immediately on meeting such types.

I’m agree with what @SW-User has said, that you are the only one who can reply to this question.
You could wonder yourself some questions to help you: Do you also feel some kind of attraction to them? Do you see them as somehow “needy” people? Do you show yourself or are very compassionate and understanding with people, no matter if they screwed it up at some point in their lives?
Normally, people who struggles with their lives or had made errors in the past find themselves very comfortable with people who are ready to give them a hand and not judge them for their past.

I agree with Nathan2269.....
Just relax....focus on you.
When you're not looking and you least expect it.....a nice guy will come along

Where are you meeting the losers you describe?

maybeeeeeeeeeeeeeeeeee you are too kind

Only you can answer this question

Maybe look at places like tge library or a book club or even church or a walking trail.You will find better guys there than in bars.

Maybe you are looking in the wrong place.

Looking too hard!

Have you heard of the law of attraction? It’s very important

You need a robot that is programmed with all your traits and personality. Be a robosexual.