Well firstly, the majority of people that use dating apps only ever want to sleep with people and move on to their next match. So, I don't think dating apps is where you'll find someone serious but I cannot speak for everyone on the app.
Maybe just getting out there more, in person will be best. Meeting new people in places is fun! Casual dating, perhaps. Casual dating is good because you learn more about yourself... what you like and what you don't.
But in general, everything will fall into place. Sometimes, you just have to let it happen and be patient. Don't force anything. Don't know if you're religious or not, but God has a plan for everyone. Be patient.