it's my first time trying to use a vtuber and i'm not really sure what i'm supposed to do here. the program seems to be using my camera but the avatar won't move with me. it'll jerk around sometimes. i've tried restarting the application, turning my computer off and on again, changing my lighting. i'm running out of ideas and don't have anyone to really ask for help with troubleshooting :( pls help

Mine does that sometimes if I'm sitting at a weird angle or moving when I first launch the program. I reset the camera by covering with my hands for 5 seconds then staring straight at it and removing my hand, after that it works perfect. If that doesn't work, check for weird things like the camera thinking that your chair is you or something weird

Like Gjurb said, not really a straightforward answer to this. Covering the camera when you start the program and then uncovering can help recalibrate the tracking.

If you restart your pc or try running as administrator, that might help. People also solved this by unplugging their webcam or other USB devices temporarily.