Higher VG content usually = less throat hit, but the quality of the nicotine in the juice is a factor as well, and you have no way of knowing that when you purchase from a shop or online. Cheap ingredients will cause a strong throat hit, so will oxidized nicotine. And sometimes with higher nicotine content you're gonna get a big throat hit anyway. I started on 30mg, believe it or not. But it was the only thing that made me stop craving cigarettes. I gradually worked down from there.
It can be tough, no joke. I envy people who pick up a vape and instantly stop smoking. I wasn't one of them. It took a lot of adjustments in fluids and hardware to find my "sweet spot," but I was determined. And that's a large part of it too. I just had to get it in my head that this was the way it was gonna be, and made myself pick up the vape when I started craving. I made sure it was the only option I had. Mindset can be everything some days.