28 year old. What are my options for palate expanding and fixing the way my asymmetrical face looks?

28 year old, I suffer bad breathing at night, can't eat well, jaw pain. When I was a child I needed a headgear and braces but due to economic situation I couldn't get it. So now, what I really need to know, what are my options to have a healthy mouth and teeth to have a good looking face? Can braces help me fixing my teeth and my facial asymmetry? I also suffer a lot of insecurities. Please doctors let me know where to start I need help addressing my issues well.