i actively volunteer for the past ten years. single people dont' go to these things. it's all married people. making friends doesn't lead to romance, it leads to making friends with people who have no interest in dating you because they are already coupled.
it's also time your spending not pursuing romance, which means less time for that. dating takes a lot of time and effort. it's not magic, it's more like exercise. yo uahve to be constantly exercising to stay in shape, and you have to be constantly dating and pursuing romance if you want romantic life.