How can I start living and expose myself to real-life situations?

Briefly, I went through some traumatic events years ago and it feels like I stopped living. I didn't realize this until now. I'm not living properly. I don't know too many people, I'm not meeting people often, and almost nothing new happens to me. I barely do anything that requires me to go out unless it's necessary.

Realizing this has made me feel sad and stuck in the past. I know I need to heal from trauma, but I want to start doing things outside of my comfort zone too

What advice do you have for someone who wants to start living again after so many years of not doing so? I don’t know how I have almost zero life experience and I’m kinda embarrassed of it