I get girls numbers from night clubs and gyms and similar places but then when i send my initial text message and I have tried experimenting with waiting 2 hours 1 day 2 days and 3 days before I make initial contact and different types of messages like really nice messages sweet messages little effort text message but then I don’t get any reply’s,

is it because I’m just some random guy and they are concerned with the risk or do they just lose interest ive gone through countless numbers and get the same result I’m not sure what I’m doing wrong your advices and opinion would be appreciated and what can I do to improve my chances? Thanks guys :)