1.87 cm seems a bit short im guessing u mean 1.87 meters which is rougly 6'2'' ish I believe and 180 pounds is pretty good porportion and you can take creatine supplement. From what I gather you've been working out for 2 months. Are you asking about steroids because your not seeing a lot of improvement because if thats the reason then it just might be because its only been a short time. What kind of workout routine do you do? Possibly include your diet. About actual steroids if you so choose to take them thats your choice not my place to tell you to use them or not.