You could simply start chatting with the one in your age or u could start with playing with the little ones ask them about their education and their friends this will be a way to join the whole group then u can talk to the others u can talk about ur experience about something or u can compliment others just simply give a idea about what u feel on the issues their talking about. Just feel free consider them as ur friends(uk not exactly like ur friends😉). I hope this will help u.