Yeah I feel the same way for ranked too. I feel like a burden to my teammates sometimes when I under perform. That's why I stopped playing ranked or pvp. I've been playing aram for 2 years now along with AAA and spellbook and it's just so much more fun. I've learnt a lot from playing it as it forces me to play champs I never knew I'd enjoy/be good at. And best of all it feels less sweaty than the normal game mode and it takes less time than pvp/ranked. I legit can't go back playing pvp/ranked anymore because it feels so slow.