Creatine occurs naturally in the body and is an amino acid. Studies on the effect of creatine on the acquisition of lean muscle mass give mixed results though and the general consensus is that creatine can sometimes help with this, but not always.

Confused understanding is obvious in the question.......... Proteins are long chains of amino-acids. There are 20 different ones required by humans but 12 of those can be made inside your body. The other 8 must be eaten in sufficient quantity and are known as essential amino-acids. Protein is lean meat - muscle fibre. With no essential amino-acids in your diet, or too little, you can make little or no muscle. The best and most available sources for the essential amino-acids, in adequate amounts, are animal muscle (meat, fish etc.), eggs, and pulses - peas and beans.

The monomers of proteins are amino acids.

no amino sugars are not part of amino acid

No,fatty acids don't have an amino group