if there was a guaranteed way no-one would be single:)

But there are ways to confirm more stable relationships.   
Try to be friends with girls first before going in for the flirt. So much relationships break in less then 2 months because of this. People don't know if they are compatible together, don't know how others would react to some reactions/things. Just make sure you find the right one before you start going in.   
Second a good place to find people is (obviously) outside. Don't use dating apps and don't slide in dm's (it will only attract the certain type of people who i will not mention). Just go to partys, go to a bar, meet people at school, your job, the gym, music lessons idk there are many ways to find people. The world is open

&amp;#x200B;

This info is all if you want a steady relationship of course. If you don't care about switching and just want sex right now by all means open tinder again