You can't change servers, sorry, too bad.

There are english people on every server. They're most likely just not talking. There are tons of english people on at all times when i play, it's just not obvious because everyone's in linkshells and not chatting or shouting in town.

Whenever you do get a group for something, try asking for their ls pearl. I have multiple different LSes so I tend to know when something's going on. Because multiple LSes let you reach people everywhere, it tends to be the way people recruit. People only shout if they have to.