I oftena don't feel like I have anything to add to the conversation that hasn't been said, so I just end up lurking most of the time. I do comment more than I'd usually do to help the platform, though that admittedly isn't much.
Welcome! For me sometimes it’s just easier to scroll and move on, engaging takes more effort. Beyond that is the dread of worrying about what people will think/say in response.
Not a problem, that’s what I’m here for! Be sure to give someone else a welcome whenever you have the chance! Keep the good vibes going around and encouraging people to stay active here.