My daughter draws first-class freehand pictures on the Ipad pro with the pencil. She also draws very well otherwise, but always on the Ipad pro with the Pencil, which also reacts to pressure. I own the S9 Ultra but I have no experience with drawing on it. The screen of the Tab S9 Ultra is probably a bit bigger with its page width and the pen that comes with it reacts very well to everything I do with it (except drawing)! Difficult decision, but when I see what my daughter does on the Ipad pro, I can certainly recommend it for drawing.

If you really want to draw professionally, use a device such as the Surface laptop studio or another tablet with Intel from the Surface range.
You can then draw and work really professionally.