Is it not rude to pressure people to date others?

I agree and I'm the same way. You should just say in a serious tone to your friends that you 100% don't want them to set you up and they need to respect you. If they don't then I would drop those friends so fast. As for the guys, just keep saying NO like you are. If they ask why just say, "because I said no, that's why" it may sound harsh but sometimes people don't get the hint. If they persist after this I would just ignore them...