Chiron deals with wounds that don't heal. These can be emotional or physical. With Chiron conjunct you sun, it is your sense of self that feels wounded.
Pluto is a planet of profound change, usually having a sense of power struggles, the sub-basement of life, and it carries a sense inevitability about it. Pluto, named for the Roman god of the underworld, asks us to kill of anything metaphorically dead or dying in our lives.
I don't know if you went "many times" to the same counselor or two, or to a series of different ones. But as in any profession, some are more skillful and insightful than others. For example, my husband and I went to two marriage counselors who were not helpful. The third one is brilliant.
Do you think you can solve your problems on your own, then, with a few astrological insights from strangers on an Internet forum?
We're a bunch of amateur astrologers here. We try to be helpful, but you are the only one who can come up with the real answers in your life.
With your natal sun and a domiciled Venus trine Neptune-Uranus. You are a very creative and original person. See if you can use your inborn artistic ability to work your way through your unhappiness. Many great artists, writers, and composers have used their inspirations to find meaning in a chaotic world.