If it's about photography Off Topic Chat is an inappropriate forum for the thread per the Off Topic Chat forum description.
An out of focus (OOF) background is not bokeh.
An OOF background is depth-of-field.
How OOF a background is is adjustable by choosing a different combination of exposure triad settings.
Unless a different make/model of lens is mounted on the camera bokeh is not adjustable.
How many and the shape of lens aperture blades, lens optical quality, and other lens construction particulars determine what quality of bokeh a lens delivers.