You can try other forms of online dating such as POF (plenty of fish) which is more geared towards relationships but you will find people also on there who are seeking "fun".
Your only real option though is to get out there in the real world and mingle with people. Whether it be straight, gay, or whatever. There's not really a substitute for that, even with using gay apps.
I mean I've met my bfs through grinder/tinder etc. The only thing is that you have to be careful, just because someone isn't looking for sex or whatever doesn't mean that they are the right match. Now I've finally met someone that I like, and that I can see a future with. With the previous ones I knew deep inside that we wouldn't be together cause they weren't mature enough. But with this one I feel a lot more safe and confident.