[nouveau0]

As others said, I don't think of it being introvert/extrovert as black-and-white. I think the most effective ways to add qualities of an extrovert were:

1. Ask yourself why do you have to be an extrovert. Several advantages come to mind: More connections, more confidence, better relationships, no stage fear, better small-talk, better dating life etc.

2. Understanding why you don't like being social/going outside. Write about it. Start from the first moment. Is it because of your parents? Did your siblings make fun of you for expressing your emotions/feelings? Is it your classmates in kindergarten/primary/secondary.. etc.

3. Now that you understand the cause, have hobbies that make you an extrovert. Covid examples: Online group lessons, hiking, walking in the park. Post/Pre-covid examples: Social dancing lessons, Meetup.com (weird crowd sometimes but hang in there), group lesson in any topic you're interested in, toastmasters, team sports. Think of something you always wanted to do.

[tutfbhuf]

I think another option would be to accept being an introvert and not see it as bad thing that has to be changed.

[nouveau0]

I don't think it's a bad thing. Although, being an extrovert gives you some privileges you don't normally have when you're an introvert. Same thing applies if you're exclusively extroverted