Heya Haruk and welcome to ThePhotoForum.
You come here and introduce yourself with a very colourful photo taken on a most BEAUTIFUL day. The carnival (or fun fair?) always offers good opportunities for photography, and I am happy for you that you are happy with your photo.
Personally, however, I feel it looks like this person HAPPENED to run through your frame, only by chance, and actually made it into a "blooper", a mistake, a photo gone totally wrong. If movement comes from a caroussel or any other of the roller coasters I see a reason for it. But a person running through the frame ... looks like a mistake to me. Sorry.