Many introverted people do have several close friends, but the fact remains that introverts will always need time to recharge alone. Friends fulfill important social and emotional needs, but interaction can still drain your resources.
Can introverts be good friends?
Introverts thrive on one-on-one relationships—they'll go deep. While introverts are often slow to commit to friendships, they don't back away from commitments once they have been made. ... They will invest their time and energy into being the best friend they can possibly be, and your friendship will mean a lot to them.
How do introverts maintain friendships?
Listen to people. Avoid one upping or putting others down. Avoid slurs and negative attitudes. Good friends will help you improve and help you become your better you, talk to the people that care about you about your flaws and goals and find ways to work together to improve on them.