Do you have issues with other rollerball pens? I’m also left-handed, and really struggle with them (especially the G2). My issues seem to be that when I’m pushing the point across the paper, rather than pulling it across like a right-hander would do, they often dry up and there’s no ink coming out.
I like how quick drying gel pens are, but I haven’t been able to write with them consistently. If that happens to you with other rollerballs, I’ll give that Pentel Energel a try.