Yes, I found that a lot of people are hesitant to ask questions when there are many people in the room (tbh sometimes even I feel like my questions may sound stupid when I'm the attendee). So I always hang around in the room/hallway so people can come and talk to me.

As someone noted, I always have my contact information (e.g., a LinkedIn profile) in my slide so people can reach out to me after the event and I actually had good conversations with people after conferences. Not only do I get feedback/questions on my presentation, but I get to expand my network.