I begin with ambition and good intentions, then quickly turn into wheezing negotiations. I promise health, deliver sweat, why do people do me on purpose?

Hey, you're about to go on stage! What's that on your coat? Don't ask, I feel really sick, I can't even remember what I wrote. Calm down, man, you got this! One second, it's hard to get the red out, Yeah, my mother made her famous pasta sauce, man, I don't know if all this is worth the clout, I'll tell you the best advice I ever got, Lose Yourself

You can find me in burgers. You can find me in tacos. I'm not a vegetable. But, I'm also not a fruit. I'd ask you to get into the meat of this riddle. But that's not relevant either, is it?

I reckon that this riddle is simply cooked atop itself.

By myself, I might be literal or I might be slang, but in both cases I'm often unwanted. Simply add a ball, and I might be beloved. Take off the ball and add a y, and I become unclear. When I'm Hot, many people like to watch me. Pick me off someone's suit and they might thank you. If you're still me-y about what the answer could be, check out the additional hint.