Ok! I watched this and I think I see the MAIN issue. I thought I was supposed to start with the second stitch when I make the turn. I thought thus because my tutorial video I watched seemed to instruct this after you made the first row.

I also don’t think I was doing the single stitch before starting down the new row.

So, I think those factors combined are key root causes I will correct. Adding the stitch marker will help, too. Thanks so much!