So, "slight trauma" through racism is your experience from childhood that seems to be lingering through adulthood. That must be annoying.
You don't need racism to experience alienation. Different hair texture, personality that is different and other things can lead to similar trauma. I was the only Australian born student in my class- all of them were of migrant families. So that was reverse racism as they congregated in their ethnic groups and rejected me.
In 2009 at the age of 53yo I had one psych appointment. during that time I explained my emotions and extreme sensitivity that I'd had most of my life since a teenager. He prodded me for any event that occurred in my childhood- my wife eventually mentioned my brother. Ah, yes, at 12yo I had an older brother that was a diabetic and we were both swimming in a backyard pool. Without going into detail he was ok after the trauma but I had thought he was going to pass away. That event triggered shock and for 3 months I didn't speak- not one word and cried a lot. Then I slowly came out of it.
I was diagnosed with dysthymia, a low mood constant depression over that event some 41 years later. I also have bipolar.
The mind is a strange operation and we often don't realise the impact from traumatic experiences can do to us. We also find it hard to "let go" and "move on". This is more a part of our DNA and so we are limited to how we can be cured of all these things. But there are things you can do yourself as well as professional medical help.
For example - only have in your life people with the golden attitude- Empathy! Some do, some are self centred. 4 years ago for example I helped a school friend (known him for over 45 years) as he was going through a health scare. Then this year I had a family crisis. Yet there was zero support from him, I realized he just didn't have it in him. It was all about him!. This doesn't mean he is toxic and I'll discard him, but it does mean my friendship towards him will be limited because otherwise I'll get hurt and disappointed.
Close friends will hear you our, be supportive and some you'll have forever.
Beyondblue topic fortress of survival
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Anxiety for example - I recovered after 22 years of hard devoted exercises and altering my life to fit the recovery- relaxation exercises, moving to the country, getting rid of toxic people and so on.