"Actually I am..." OR "I am actually..." OR "I actually am" ??
Hello folks.. I always use these expression but I am not sure which one is the correct or at least more usual..
can you help me to understand it? Thank you in advance.

Question

Answer

They are all correct. And they all mean the same.

Answer

"I actually am....."  sounds a little strange. I would avoid it.  As for the others, they seem to work pretty much the same.

So, you're not going to the game? 
Actually, I am. I changed my mind.  (Used for emphasis.)
I am, actually. I changed my mind.  (Again for emphasis.)

Note that you need a comma in this type of sentence.

Actually means 'in fact' (de fato) when used this way. Sometimes we use it as an intensifier in the same way as 'really'

I actually thought that she liked me. How wrong can you be?
I really thought that she liked me. How wrong can you be?

As an intensifier it goes before the verb.