I am going only from personal experience here... This is a method tried and tested... And has got me laid many times.
I use some online dating apps.. I get a chicks number, and she gives me her number based on me looking in pretty good shape on my profile pics.
I talk to her on WhatsApp, and her interest level is medium.. I ask her, for a picture of herself, however in return I send her a video of myself lifting iron in the gym.. My arms looking big, veiny and fukin strong.
80% of these chicks go from medium interest to, high interest and begin talking about let's get together for a date.
It's always worked for me... Not sure what this poster is even talking about