I think my husband deserves better
You don't think you're good enough for your husband?
I think my husband deserves someone who loves him more
I understand feeling down on yourself, but you should think better of yourself. He married you, so he accepts your flaws and you should too.
I don't deserve an awesome man.
If you can't see your own good qualities, you might be depressed. It may be best to get some professional help if you have such low self-esteem.