For a one time quick thing, you can probably get away with any pair of pliers. For any real cable install definitely use a crimp tool.
Just pushing it on with your hands its going to slide right off unless you have a really thick cable for some reason. The copper wire only makes contact, it doesn't "snap in" to anything on the plug, so if you dont crimp it at all you're going to just end up with a lonely F connector screwed into the back of your device and a roll of cable sitting on the ground next to it
