How to Slow the Speed of a Sewing Machine
Singer foot pedals sometimes have a speed adjustment.  Mine does, I own a CG 550. Look underneath the pedal and if there is a little hole, you should be able to take an electronics grade small flat head screwdriver or one for glasses and torque the gauge to speed up or slow down. 

Singer machines typically come at middle speed. As this is a beginner machine, it may already be set as slow as it goes. Of course, that is, if it even has the speed adjustment slot.

My very first Singer had the hole with the ability to adjust the speed without the markings. 


You’re machine manual on page 6, states that speed is only controlled by your foot. See pic from manual taken from Singer website.


Yes, you can control the speed of a consumer machine somewhat. Mostly it feels like slow, fast and stop. Commercial machines have much more subtle control.
The best way to get used to the speed of your  oops, sewing machine is to take gobs of scrap fabric and go nuts with all the stitches. It’s fun and helps.