Yes, sure. I have tried since the beginning of the universe. When there were no styluses for iPads (even before Apple Pencil had been invented). I used to draw with my fingers. Here is the output
I can tell you that I love Procreate and I wish they could create a Windows version. But for Windows, there are many good alternatives as well like the Leonardo app, Adobe Photoshop, Concepts etc.
Neat!
Procreate just seems so "easy" xDD