I have a couple of work colleagues. I don't know if it makes a dozen. All but two of them have left the state since I've worked with them, so I can't meet most

I have a couple of work colleagues. I don't know if it makes a dozen. All but two of them have left the state since I've worked with them, so I can't meet most of them face to face anymore. They all do seem to have better careers than I do, though, so the potential to find a good position through them seems high. I have them on LinkedIn and have let several of them know that I'm currently looking for software engineer work. Currently they just don't know of any open positions.