You have discovered what countless people before you have realized: a city can be a very lonely place. I often think of the paralyzed man who couldn’t find anyone in the entire city of Jerusalem to help him—until Jesus came along and healed him (see John 5:1-9).
I don’t know if you made a mistake by moving to this city—but God knows your situation, and the most important thing you can do is seek His will for your future. He loves you, and He knows what is best for you. Even if you didn’t look to Him for guidance before, I urge you to do so now. And if you have never asked Jesus Christ to come into your life, open your heart and life to Him today. God’s promise is for you: “In all your ways submit to him, and he will make your paths straight” (Proverbs 3:6).
In the meantime, however, take steps to overcome your loneliness. What can you do? First, seek out a church where you can meet others your age—and also grow in your faith. An active church may also offer opportunities for you to get involved with others in community service projects.
Don’t, however, seek to overcome your loneliness in wrong ways, or in wrong places (as many do). Remember: God loves you, and when we know Christ, we are never alone.