You need to look for the answer inside yourself. What is causing that? Also, have a look at your birth chart for any relationship karma.
In general, relationships are not a way to heal your traumatised psyche. That is a much, much earlier step as it relates to survival. If you are in such a depressive state, you need first to address that. Otherwise, you will only be damaging yourself and other people even if you were to have a relationship with woman.
Other than working on your solar plexus chakra (and your other chakras too for balance) as it was suggested already, there is a working by HPS Lydia that can help you heal or at least find the root cause so you can heal:
:arrow: Vibrate the rune Wunjo x88 times (you can do less if you are not accustomed to that much, such as 40, or more if you can handle more, such as 111, 144, 216, 333)
:arrow: Affirm: "In the most beneficial way for me, I'm permanently and completely healed from any and all psychological, mental and emotional damage and pain." You can tailor it to make it more yours, but be sure to include everything that's needed to ensure full healing, and keep it short and simple, in present tense and with no negations.
A relationship is not the first step in adult life. The first steps are consolidating an income (career/business) and a residential property (i.e. house/apartment) to live in.
Even if you were to do a love working, you need to ask yourself if you are a quality man. Only you know the answer. Only a quality man can attract a quality woman. What do you have to offer? What value would you bring to a relationship? Love and care are not sufficient for a relationship to be successful and healthy in all ways.
I cannot tell if you are doing anything wrong without knowing the details of your life, unfortunately.