Let me give you some advice on talking to women anon - even among those who are open to doing stuff casually, most if not all of them want some sort of established relationship before engaging in any sort of mutual play/cuddling etc. Guys by comparison tend to be much happier to rush into things. Everyone has their own personal tastes of course and if you're asking girls at parties for stuff there will be rejections, that's completely normal. Don't get too hung up on it and maybe try to take things a bit slower.
If you really want affection and you don't mind if its from a guy, download grindr and try to find yourself a cuddle buddy. Just be clear that you aren't looking for anything sexual if you are indeed straight. Boys are much easier to get what you want from, I've found.