Sabine is looking for a professional microphone to use on her Zoom calls. Leo says you want to have one that supports USB. Leo uses the Heil PR40 and uses an adapter interface that converts it to USB. You don't really have to spend a lot of money though. Leo recommends looking at RODE. They design a lot .of high quality, professional-grade microphones for those on a budget. Check out the NT-USB Mini. It's $99. But avoid buying them on Amazon. There's also Blue and the Audio Technica ATR2100.