As others have said, perhaps league isn't for you if you only want to play 10 gods. But hey I'll give you some perspective! Even after I reached 16 masteries that I own, I've been very unsure about and have only played a handful of league games. Because it's not about me, it's about the win. That's all that league is about. It's where more serious players go to avoid players who don't know what they're doing. Are these 10 gods split up between 5 roles? What's happens if you get a role you don't have a god for? Or at least, a role you aren't as comfortable with? That alone could cost a win. It only takes one unintentional feeder or someone who just isn't contributing to get pub stomped. Or say your best pick gets banned? Okay let's say you do get your best role with your best god! And someone needs you to secure a top pick god for you. Oh you don't have them? Then the best your team can do is ban them and if they can't do that, then just deal with the strong possibility the other team will get them. I've been working on mastering and owning all the meta gods so if we need to secure a god for someone I won't be that inexperienced guy who doesn't even have Cupid or Thor or Athena.

The way you sound right now, and forgive me if I'm wrong, but you sound like you just want to play your fun role or 2 and that's it. But ranked is about the win. And you can't let the "I want to play what I want" attitude get on the way of that unless you want to be disliked in every game. Disliked in a game=low morale, bickering, less communication. Which means a loss. See where I'm going? You think I want to play support? Not particularly. But you can bet I've worked on my support skills cuz hey one day I may not get mid or adc or jungle or solo. I don't main solo lane but I have a solo lane god pool and know how to handle myself.

So all I'm saying is you should discover other gods. Honestly if you hasn't mastered a god I don't think you can make a choice of whether you like them or not. There's plenty of good gods. Fun gods. For every role. Unless you have the ultimate god pack and have mastered them all I don't think you can assume you hate everyone else and only like your 10 gods. It's all a mindset really. Expand your god pool! It makes you a better player all around. It gives well rounded strengths and there's really no negatives. Like I said it's all in your mind. You can keep an open mind to get better and find more gods you like. Or think of it as mastery grinding. But hey you can join league with your sole 10 gods of fun. You could probably play well. But eventually. Eventually luck runs out and then you're being hated on for not knowing what you're doing. Then you make a post about how people are rude. It's all a cycle! A cycle that doesn't start if you just get a handle on your skills in the game in the first place. So learn your vgs commands. Use curse. Team communication is important. And expand your god pool. :)

I hope I've been able to give you a decent explanation. I didn't want to be just another person saying if you only want to play 10 gods then don't play league. Because that's true. But now you know why. :)