What camera do you use?
______I use a Canon T1i with an 100mm f/2.8 or an 50mm f/1.4 lens for most of my pictures. If you're looking for photos with tons of blurry bokeh in the background, you want to use a lens with a smaller f-stop like 2.8 or lower; however, take note that as that number decreases, your subject may not be as in focus as you wanted since the depth of field is decreasing. Also, manual mode is your friend! Take the time to soak in its wisdom and you will be a happy sunflower bursting with petals of knowledge. Grin.
______Somehow with MS Paint when MS Paint was actually a thing. Dangerous. Do not recommend.