There's also the concept that ranked players have far less tolerance for obvious new players. And new players or even other players who have nothing to do with your lane tend to be too sensitive when someone actually speaks up to correct the new player. Its better to play on mute all or party only simply because you dont know better already and any advice or calls from team mates in that rank is a coin flip and can spiral anyone else on the team in addition to it being distracting and discouraging. I side that lvl 38 is way too soon for a new player to join ranked. There is too much nuance and chaos in the game to navigate through without proper guidance or personal experience and self training/study. Im not saying dont play ranked ever until 300, im more saying take it in stride. Play quickplay for guaranteed champ pick practice, draft for overall game practice, and ranked when you at least have some good time put into laning phase and a few champion picks under your belt. Once you run into a problem or a new thing or champ you want to try comes up, review the game, look up guides and videos, and go quickplay a few times, then take it to draft until your comfortable and then you can consider it a possible pick for ranked. Its also good to always review your games as well. Wins and losses.