What kind of webcam are you using? If you're filming using OBS, I probably wouldn't worry about going with a phone, seems Logitech C930+ and Logitech Brio 4k have good quality for recording.
You can also use Elgota cam links to get DSLR and similar camera inputs into OBS and treat your bigger cameras as a webcam. I've looked into trying this myself. There's a few good cameras that Roberto Blake and
@Andrew have suggested in the past which would also work well as webcams with the right capture cards.
Also keep in mind that lighting is important as well. A good quality camera will still look bad in OBS if your lighting isn't good. Also keep in mind of your bitrate quality. A super sharp camera will still look grainy and pixelated if your settings aren't optimised.