The problem with faking it is that you have to keep faking it and lying, potentially for the rest of your life. That gets exhausting over time and eventually they get found out and the fall out does not end well. You do you but I personally would not recommend anyone act fake.
In front of friends obviously don't lie. But say customers, random acquaintances you are not friends with. I know no introvert that doesn't feel comfortable with close friends personally, be you around them, be someone else around others.
The problem with faking it is that you have to keep faking it and lying, potentially for the rest of your life. That gets exhausting over time and eventually they get found out and the fall out does not end well. You do you but I personally would not recommend anyone act fake.
In front of friends obviously don't lie. But say customers, random acquaintances you are not friends with. I know no introvert that doesn't feel comfortable with close friends personally, be you around them, be someone else around others.