As long as I have time to be completely alone, I can recharge. It doesn't matter if I'm reading, gaming, target shooting, fishing, or any of my other hobbies. They all allow me to recharge equally. Like some of the other commenters have mentioned in their responses, the most important thing is to have some time alone with your thoughts. It can be straight to exhausting to be around a large crowd of people when you're an introvert. I celebrated Easter with my family today. We are a large Italian family and we probably had a total of around 25-30 family members all crammed in to a house for dinner. Everyone is loud, there is constant talking, loud discussion, and emotional debates. After approximately five hours of this I was completely emotionally spent (even though I had a good time being around my family!). When I finally got home, I laid on the couch and just felt completely drained, and like I could fall asleep. I shouldn't have been that tired since I got a great night of sleep and was active all day. However, I sat on the couch, browsed reddit, watched some YouTube videos, and responded to some forum posts. Once I had relaxed for around an hour or so I felt completely recharged! Introverts just need that little bit of extra time to themselves after group gatherings (even if they are with family members). When we get a little bit of time to ourselves we can recharge and go back to being social :) I find that the larger groups or medium sized groups with more intimate interactions are the most draining for me. When I was younger I wasn't sure how to handle being an introvert, and I thought that it just meant that I couldn't handle large, or new groups of people. It turns out that keeping myself out of large groups of people, or more extroverted activities was only serving to limit my happiness. Once I found out that I just needed to recharge between outings, or occasionally take 15 minutes to myself during an outing/activity, things vegan to improve and I really started to own the fact that I'm an introvert.
Sorry that the formatting of this is terrible. I'm on mobile at the moment so I also apologize for any spelling or grammar mistakes. I decided to write this response to potentially help any younger readers who may be limiting their social interactions because they are very introverted and feel uncomfortable when out in groups or meeting new people. I wanted to share my progression and the lessons I learned from starting to really "come in to my own" as an introvert. I hope this has helped some of the introverts who may not yet realize that they need to take time to themselves to emotionally recharge!