When this pandemic fuss was at the beginning in January, I've decided to buy a webcam just in case I got sick and have to work from home. It was Logitech C310 HD[0] for like $40 including delivery. When we became full WFH in april, people in working chats started asking me what kind of that super nice camera do I have.
Our company is issuing MacBooks for workers. Turned out that internal webcam of MacBook is so crappy that even cheap 720p Logitech looks "HD" compared to it. Logi also has quite nice mic.
Another thing was that I made my workplace in the erker, facing windows, so I got plenty of light in the summer. I noticed that I got the best picture in the morning and on the sunset, when light is abundant.
So, the takeout is: get yourself not a great but just a decent webcam, figure out the lighting. And for god's sake, do not buy this clown looking mic to hang in front of you, you don't need it at all.
[0] https://www.logitech.com/en-us/products/webcams/c310-hd-webc...