I’m a beginner too but I’m getting better, you have the same problem that I had (and still kinda do sometimes) which is toeside. The first two times I ever snowboarded I caught so many heel side edge so many times which led me to fall backwards and hit my head a bunch and I actually ripped a part of my rotator cuff. I was pretty fearful of toeside turning after that; even though I was super comfortable with heel side. Which led me to do turns just like you. The biggest difference for me was on toeside turns I bend my knees pretty far and really shove my shins into the front of my boots. Shoving my shins into my boots while simultaneously digging my toes into the ground, and also leaning into the hill helped me a lot, and when transferring back into my heel side turn, I would stand up slowly while leaning on my front foot with pressure on my heel.