I am a female and a long-time crocheter, an editor who types a lot, and a former piano player, but when I first started trying to knit, I was still very much all thumbs! So I don't think it has anything to do with gender or even hand dexterity; however, I have noticed that those who excel at mastering repetitive hand motions (without getting carpal tunnel, let us hope) tend to pick up knitting/crocheting faster.
In short, though, we were all "all thumbs" when we first started. It just comes with the territory. And if you accept this fact, then you're much less likely to get frustrated with yourself as you learn.
Welcome to the forum and to the wonderful wacky world of knitting. With help from this site, you can do anything knit-wise and crochet-wise!