If you have an iPhone+mac you can use continuity camera which is pretty seamless in comparison: https://support.apple.com/en-us/HT213244
I bought a Logitech webcam during the pandemic. Imagine my surprise when the webcam resolution was worse than the one built into my XPS 13.
Opal C1, Instalink, continuity cam/droidcam, and a DSLR/mirrorless setup like in this article are essentially your upgrade options if you don’t want to pay for a 4k Logitech.
Wish there was a FOSS alternative.
I use https://github.com/agarciadom/ipwebcam-gst as a way to turn the MJPEG into a video device.
Disclaimer: zero affiliation with the product (outside of being their happy customer). I simply found it way before the official continuity feature was even announced for macOS+iOS.