Hello Jorge! You will be able to run Virtual Background with the C615 HD Webcam yes, but that's a software feature from Zoom or Teams, and it will be based on your computer's hardware power if it can run in or not, and how well it'll run it too.
Hello Elijah, you should be able to choose your microphone in your computer settings. I use my Logitech webcam with a Blue Yeti microphone all the time.
The C615 swivels a full 360 degrees, meaning you can face the camera away from you for privacy. However in terms of security, this webcam is only as secure as your computer.