I had never used one and had no idea what to say or do, every 1st message I sent never got a response. Like most others I blamed my self.
So this is what I did, I would swipe on women who I would never usually go for, Id wait for them to message me 1st and see how it made me feel, if I liked it I would use the same thing on someone who I was interested in, surprising how confident these people can be and can be pretty damn smooth. Iv actually made some good friends from the 1st to message. Kinda shitty I know, but did help me.