How to "free draw" with the knife tool?

Hello, is there a way to draw freely using the knife tool (like the pencil tool)?, my intention was to create a 2d character with the plane mesh, not a png texture, because I want to “solidify” it later…

Would probably be better to use the Grease Cut in the Sculpt Tools addon. Then you could draw your outline with a curve.

you could also use the curve freehand draw tool
then convert to mesh line and use the knife cut in tool panel

or draw it in grease pencil window
and convert to curve then mesh may be

happy cl

ahh, thanks for the alternatives!