I’ll be upfront, I am not a big fan of self-diagnosis when it comes to much of anything, including psychological disorders, nor am I a fan of pathologizing every little fear, flaw, quirk and anxiety that people have. True phobias an exaggerated fear of something that generally is serious enough to interfere with a person’s life. What makes you think you have phobia rather than just a fear or anxiety or you are uncomfortable or don’t like arguing ? How does it manifest itself in your life? If you do have true phobia and you want to overcome then you will probably need therapy.