You may or may not have avoidant personality disorder. You match many of the symptoms. It is a realistic possibility. The good news is that many effective treatments exist for anxiety.
You mentioned that you try to be a people-pleaser. Perhaps you do this because of a desire to be liked or as a strategy to avoid confrontation. Nothing good comes from people-pleasing. The most unfortunate aspect of it is that you abandon your true self and essentially become whoever anyone else wants you to be. It is a very inauthentic way to live. No one could be happy living as someone they are not.
Now is the time to get help. Consult a therapist. Anxiety typically becomes worse if not treated. This happens because people with anxiety often attempt to manage it by avoidance. This short-term approach has been found to make anxiety worse in the long term. Many people have overcome anxiety disorders and live psychologically healthy lives. Millions of people have done it and so can you. You have the power to make positive changes in your life and it begins with deciding to get help. Please take care.