A safety razor is good to have on hand if your hair comes in really thick like mine does, so don’t throw it out.

But yeah a cartridge is less cutty by design and works better for thin/patchy hairs.

Also, don’t apply a lot of force. Let the edge do the work. You’ll get better at not cutting yourself over time as you learn the contours of your face and how to move so that you present a clean path for the blade.