It may just be a timing issue. Whenever I was seeking as a WAR/MNK in Jeuno for extended periods of time, I'd usually see a few other WARs and sometimes even a PLD or two also LFG. But I'm also about 10 lvls ahead of you. Maybe tanks really are lacking in your "generation". If that's the case, you could try taking time out to do some farming here and there while you wait for the next generation of tanks to catch up to your level. You don't even necessarily need to "take time off" to farm. Just keep your party flag up, have a good search comment, and stay out of /anon mode. You might be surprised by a party invite when you're half way across the world.
As far as the lack of English speaking players: I'd suggest you get accustomed to using the auto-translate feature in both party chat and in your macros. I usually have both J and E flags set when I'm seeking, and found that I've been able to work together with JPs with a decent amount of success due to the auto-translator. And as a SAM, I'm sure you'll come to appreciate the built in {In what order shall we use our weapon skills?} question in the auto-translator :)
Don't be afraid to join a JP party, should you get an invite from one. It's certainly quite... different. But who knows, you may enjoy the change of pace.