I think you're mixing up depression symptoms and AvPD symptoms. Of course, AvPD can lead to depression, but they are definitely not linked. There are non-depressed Avoidant people.

Avoidant people must have low self-esteem, but the diagnosis requirements say nothing about depression.

The DSM V says to diagnose avoidant personality
disorder, the following criteria must be met:
A. Significant impairments in personality functioning manifest by:
1. Impairments in self functioning (a or b):
a. Identity: Low self-esteem associated with self-appraisal
socially inept, personally unappealing, or inferior;
excessive feelings of shame or inadequacy.
b. Self-direction: Unrealistic standards for behavior
associated with reluctance to pursue goals, take personal
risks, or engage in new activities involving interpersonal
contact.
AND
2. Impairments in interpersonal functioning (a or b):
a. Empathy: Preoccupation with, and sensitivity to, criticism
or rejection, associated with distorted inference of others‟
perspectives as negative.
b. Intimacy: Reluctance to get involved with people unless
being certain of being liked; diminished mutuality within
intimate relationships because of fear of being shamed or
ridiculed.
B. Pathological personality traits in the following domains:
1. Detachment, characterized by:
a. Withdrawal: Reticence in social situations; avoidance of
social contacts and activity; lack of initiation of social
contact.
b. Intimacy avoidance: Avoidance of close or romantic
relationships, interpersonal attachments, and intimate
sexual relationships.
c. Anhedonia: Lack of enjoyment from, engagement in, or
energy for life‟s experiences; deficits in the capacity to feel
pleasure or take interest in things.
2. Negative Affectivity, characterized by:
a. Anxiousness: Intense feelings of nervousness, tenseness,
or panic, often in reaction to social situations; worry about
the negative effects of past unpleasant experiences and
future negative possibilities; feeling fearful, apprehensive,
or threatened by uncertainty; fears of embarrassment.

I'm wondering why if you know you're describing depression symptoms, you are here calling them Avoidant? Won't that be confusing to people?

I understand you have trouble expressing yourself. However, there is a difference between making an error with word choice, and blurring two psychological concepts. Depression is definitely something that a lot of Avoidant people are familiar with. I can't imagine that you can't talk about depression in this forum. So call a spade a spade - if it's depression, call it depression, and if it's Avoidance, call it Avoidance. Simple.