Fujifilm FinePix S4500

Hi All! I'm trying to get a blur background using my Fuji S4500 camera and I'm not succeeding with it. I put the ISO according (200) or to light and AF is 4.0, I can't alter it. Is there another way I can do it. Can anybody help me please?

Hi all!  I'm new on here and just joined up hoping I'll get more tips in using my Fuji finepix S4500 camera. I've only recently pick it up again. I enjoy taking any subject, but my favourite is taking macros of in insects.  I had tried many modes to get the best macro. The best I can get it is on S mode. Any tips I can use another mode to get a sharper photo. I have put a photo to see what you all think.  any tips is appreciated thanks.