Sometimes you have to go a few times. I noticed when I started that even if you talk to people, they will answer you politely but then dismiss you as they go off into their teams and cliques for the game.
Identify individuals that might also be on their own rather than groups of guys.
I found the safe zone to be a good place to mix, before the game or during lunch. After I went a few times to AWA to get my initial UKARA, some people who I spoke to previously would acknowledge me and even invite me to set up next to them.
Bear in mind that people you speak to might not be there again.
I used to not like going to places on my own or starting conversations with strangers in unfamiliar places when I was younger but a working life of working overseas on my own and having to address large groups of strangers has made me realise that I no longer give a *uck what people think of me.
Also, very importantly, remember that airsoft attracts a wide cross section. Most players have some sort of issues (hey we're grown men spending Sunday hunting each other with toy guns), so dont fall into the trap of thinking everybody else is an Arnie Terminator indestructable and its just you.
Welcome to the airsoft circus.
Failing that, what does it matter. Once youre playing, it doesnt matter.
Airsoft is certainly more fun with familiar faces and social interaction.
Failing that, come up to Tuddenham on a milsim lite day and we'll sort you out.