Hello PtrLopes: I see this is your first post here on PC. So... welcome to Psych Central.

As you are perhaps already aware, we here on PC cannot offer mental health diagnoses. Plus I'm not a mental health professional. So I can't really suggest much with regard to the experiences you're having although I would have to say they are familiar to me. My inclination would be to suggest your reaction to arguing with people may have to do with low self-esteem. But that's just a guess. A couple of things you might take a look at are the concepts of childhood emotional neglect (CEN) as well as the highly sensitive person. Here's a link to the CEN forum, here on PC, along with a link to the Coping with Emotions forum which is another one that might be of interest:

https://psychcentralforums.com/child...ional-neglect/

https://psychcentralforums.com/coping-with-emotions/

And then here are links to 3 articles, from Psych Central's archives, 1 on CEN, 1 on the highly sensitive person, & 1 on self-esteem :

7 Signs You Grew Up With Childhood Emotional Neglect

Are You a Highly Sensitive Person? | Happily Imperfect

What Is Self-Esteem?

One thing you might do, here on PC, would be to take some of the quizzes & tests that are on offer. There's a link to them in the banner at the top of the page. However here's another link as well:

https://psychcentral.com/quizzes/

I hope you find PC to be of benefit.