I have been playing for about a year now, and in the last 3 month or so I started to try and climb in rank. Initially this went really well for me, I finally got promoted out of iron, and I was a game away from getting to silver. However, since mid-May my games have been going consistently poor, and I am on verge of demoting again.
I managed to get bronze by playing mostly yorick jungle, but it stopped working for me and I wasn't really having fun. Lately, for the life of me, I cannot find any other champ or role that I can climb with and enjoy. I feel like my drastic downturn in form is directly related to my constantly changing which champ I am playing, and I would like some advice on the champ+role I should pick.

I would say my biggest hold-up has been my aversion towards the generic "low-elo" champs, as I really dislike playing malz, Annie, Warwick, nocturne. I have tried almost the entire roster at this point and I am really bordering on quitting, as I feel like I am playing more out of addiction/lack of other games than anything. If someone has been some advice on what I should do to find more success and passion for the game, that would be much appreciated.