The problem with webcams is that they're all sold out everywhere, except for like the $2000 ones. I'm guessing medical professionals and people in your shoes have bought them all out, just like people have bought out fitness equipment, food, etc..

Is your phone at least a smart phone? If it is, I really think you should use your phone and connect it to the internet to use video chatting. I can tell you how to do that if you want.

If not, idk where you'll find a camera. I just searched for like 5 mins and they're all sold out. Even some of the $2000 ones are sold out. So I would say... either use your phone to video chat or tell them that webcams are all sold out.