I know that sometimes it seems so lonely and not fun. But that's what the devil wants us to believe, so that we will desire to stay connected with the world, and worldly desires. That is his temptation. And way to many people have fallen for it. So many believers are walking like unbelievers to the point where the world cannot tell the difference.
God calls us to come out and be seperate from the worldly ways of doing things. He desires that we be Holy and full of integrity, but He is all about fun as well. Just look at the way the Israelites were instructed to celebrate the different festivals and such in the old testament. God is not a stick in the mud.. He does want us to enjoy our lives... we just have to do it on His level, or ways. And many people have gotten the wrong idea that one cannot have fun if their in God... but one thing they forget is that joy is one of the fruits or characteristics that come out of being fully connected and submitted to the Spirit of God.
If we truly are submitted to God... we will not be somber and serious all the time, for even Nehemiah spoke to the people as directed by the Holy Spirit... that the joy of the Lord is our strength. Joy is very important to God.
The hard part about being a believer is that to many people think that you can enjoy a godly life, so when there is activities put on by the church, they don't participate and then there is hardly anyone there to fellowship with or Friends to enjoy. Plus way to many people are all about themselves and their family... which leaves a lot of people sitting at home lonely, because their family is either not saved, or maybe they are like you and desire to hang out with someone of their own age and similar interests.
Don't give up, even if it takes awhile to find the right group. Maybe now that you drive .. you can try different churches in your area and see what they offer in the form of singles fellowship. Might be able to make some new friends. But above all keep seeking God for help ... and wisdom to know the answer. For He will lead and guide you to the right group... and it will be a joy, because your right where your supposed to be
Blessings