A window on the balcony is open inside. How do I turn it off? Urgent!

From your picture, we can see that this window has no handle, that is, how can you turn it off without a handle? You can't close the window tightly, and the position of this window seems to be wrong, that is, your decoration occupies the position where he closes the window, so it's really not easy for you to close the window, unless you push it tightly first and then stick it with tape. I think this is one way, and the other way is to install a handle and a lock point so that it can be closed tightly, but in that case, a protruding handle appears.