I need help finding a main >.<

Okay so here's the thing. I've been playing the game for 3 years now (I stated playing when Braum was just released). In that time I feel like my tastes in gameplay have changed a lot but I don't know to what.

Starting out I always loved assassins. They were so much fun to me. I USED to main Zed but now I get no enjoyment out of him which is strange because I remember only playing him for months. I tried playing other assassins too around that time and I have most assassins at level 5 or 6. They just arent fun to me anymore and I can't seem to find a champ that suits me now.

I used to love being able to get in kill someone and then get out. So Shaco, Zed, Kha and LB were my go to champs. Now I don't know what I like? I don't enjoy just picking of players anymore. I want to be able to play a champ where they can make a big impact. I want them to be kinda challenging to master so I can keep improving. I want to be able to help my team but also not be useless if I have to do something on my own.

I've tried out different supports like Thresh, Blitz, Janna and they don't really do it for me. Although Janna was kinda fun to play as but not something I'd like to main. Also I hate ADC I despise that role, I'm no good at it and I think it's just a kinda boring role. Other than ADC I don't mind any other role.

I know I'm being like really picky lol. But I feel like it's best to put everything here to see if anyone can find something.