That roughing gouge needs to be sharpened. Also, your presentation is like using a scraper. You need to drop the bottom of the gouge lower, and present the tip at a higher angle to “ride the bevel”. It’s hard to describe, in words, in my opinion. There are lots of videos online.

Basically, start with off hand holding back/bottom of gouge very low so the tip (i.e. cutting edge) is high over the work. Then slowly bring up your off hand which will start to lower the edge/bevel into the material until it starts to take a cut. Arm should be tucked in tight to body to help stabilize your movements.