Do proteins really work?

Creatine monohydrate can fix that, that's why they're recommended in conjunction.

I know, but taking Creatine Monohydrate needs to be complemented with an liver protector, since Creatine tends to be hard to process for the liver. It's a hassle.

Plus, Creatine is better for short term energy, since the body requires it just when you're running out of carbs. It won't help at the feeling tired part.