Sellers offering much more than they can deliver (software solutions)


I’ve been contacting sellers to find someone who can script my mouse activated buttons (for desktops) so that they will respond to taps on mobile devices. Everyone I’ve approached so far hasn’t been able to supply a solution - even though their gig advertising seems to indicate they can. How can I find someone who has experience in this kind of coding without contacting all the very many people who say they can provide such solutions (and can’t)?