Your worth as a human being is a birthright. No one can give it to you or take it away. You are a worthy individual. Don't listen to an inner critic. And treat yourself with compassion.
Compassion is the core of self-esteem.
It is a skill that you can acquire and improve. For most singles, self-image was predominantly created as a child. It may be negative or have negative aspects. However, it can be changed. Self-esteem is something anyone can increase.