I'm not sure finding other Americans is the best way forward, if only because 1. you might not have anything in common, nationality aside, and 2. speaking to other Americans may trap you in a cycle of nostalgia for the life you've left behind, which won't help you make a new life here. You haven't said where you live, have you tried joining any groups? Book clubs, a local women's institute, volunteering at centres or festivals- there are many ways to meet other people who share your interests in safe, welcoming environments. I've also learned just by indulging in pop culture you gain similar interests as other people and have a starting off point for more conversation (my current indulgences are Game of Thrones, Doctor Who, Masterchef and BBC 4 history programmes). I'm not sure exactly what you mean when you say that you aren't understood? I know that it is a national pastime for the British to gently (yet insistently) mock when American pronunciation differs (my husband's enjoyed doing this for almost a decade) from the British, but does your experience go beyond this? Is it due to living in a place with a strong regional dialect, or have a regional accent yourself? If that's the case, I think people just get used to it after awhile and stop commenting. Hope things get better for you.