Ask HN: As an introvert/ambivert, how can I reap benefits from social events?

Social events like job fair, networking, excursion, etc. Do we need to have a certain kind of personality to follow up after these event? It feels quite difficult to follow-up after the event. I can enjoy in-person but I cannot take it online (delayed feedback and having to wait is tiring). As a result when everything is online, I mess it up big time. What are your opinions on it?