Why I retrited first , while

I could Mater right away, I was just afraid of loosing queen iunstectly , that's very strange, because of it I don't see enought possibilities

If you can give check, don't worry about any of your pieces being attacked; your opponent will have to either run away or kill the piece giving check.

and why this he retrited for no visiale reason?
I think Nice Game, but could be more effective I think