Do you have an idea you want to pursue? If so, go for it. It might work, and if it doesn't you'll at least have something (a cool thing you made) to show for it

Do you have an idea you want to pursue? If so, go for it. It might work, and if it doesn't you'll at least have something (a cool thing you made) to show for it. But definitely don't "start a startup" for its own sake. That sounds like a guaranteed path to failure. To succeed on your own you'll need to have some deeper motivation than just not wanting to apply to jobs anymore.