A good champion to one trick for low elo !

Hello, sooo im looking for a good champion to one trick for mid or top lane even jungle, doesnt really matter, i enjoy all. Some champions that i have in mind are jax, fiora, camille, zed, warwick, riven and irelia. I played all these champs and i really enjoy them all, i just wanna focus on one and get better with its mechanics and what not, but its pretty hard for me to make a decision xD.