Mechanism Of Combination Lock How Can I Stop Water From Coming Through Home's Window?

How Can I Stop Water From Coming Through Home's Window? - mechanism of combination lock

I have a window to the west, and if there is a combination of heavy rain and heavy rain, wind, water seeps through the bottom of the window and falls to the ground.

Close the window probably needs to close. As it is now, when I moved down and then lock it, jumped back a little when I let go. Is there any way to the window adjustment mechanism is so weak?

I am sure that I also lose valuable heat through the window so that I have a solution for this problem soon, hope. I'm not a great craftsman, and I was the first owner for a little over a year.

Thank you for giving you advice.