Just learned you’re supposed to go through both loops…

I’m a beginner crocheter, I’ve tried it a few times over the years but just recently made my first pieces. I learned from YouTube videos, and I’m bad about not watching the whole thing before trying to practice along with the video.

I’ve made 3 scarves. I’m working on a sweater now (ambitious I know) and I just realized that you’re supposed to go through the whole stitch. I’ve just been crocheting into the front loop the whole time. I can’t wait to get home and try it the right way

Idk if this makes any sense, maybe you can do both methods and it’s just called something else? Is it still single crochet if you only went through the front loop?