True. Some people are VERY good!
However there's a technique for even the artistically challenged... it won't get you votes, but it can be fun to mess around.
I've found that if you scribble all over the canvas in black, then swap to white scribble, then switch back and forth; you will make a mess, sure, but in those lines you might be able to 'see' an image of something (as the brain likes to find patterns as with Pareidolia). When you can see the outline of something in the messy environment, use your brush to enhance what you see so it looks more like what your brain thinks it should be.
A finished subject amidst a mess of random chaos ends up appearing in a grimy dreary dangerous aesthetic with horror feels. That's something one can make with only a mouse at least.