Drawing smoother lines in Photoshop CS2 - Graphic Design Stack

I've seen people draw in Adobe Photoshop, however unlike my sketchy lines, theirs come out a lot smoother and I mean a lot. I was just wondering how to do this and if its a system thing rather then a

Solved: Brush strokes become jagged after a few seconds - Adobe Community - 5982825

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Solved: Photoshop lines aren't smooth with smoothing on? - Adobe Community - 10090680

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cs6 - Photoshop : how to smooth (vectorise?) the brush - Graphic Design Stack Exchange

Photoshop line/brush smoothing - Graphic Design Stack Exchange

Solved: Brush strokes become jagged after a few seconds - Adobe Community - 5982825