Why You Are Hardstuck in Low Elo
It is 100% your mechanics. It is completely and entirely your aim and movement. It is not your teammates, it's not your game sense, its not your communication skills, map knowledge, agents, it is NONE of that. It is your mechanics and only your mechanics that is keeping you in gold/plat and below. Game sense is completely irrelevant in low elo, it should barely even be considered a factor for improvement. Don't think about it, and don't worry about it until you get into like plat.
I'm an immortal smokes player, I'm not mechanically gifted, I think my best skill is my ability to IGL. If I went into a silver lobby I could instalock Reyna, mute my whole team, and drop 40 kills without thinking twice. Literally any player in diamond and above could. Good mechanics is the expectation, not the exception.
Don't get me wrong all of the skills I listed in the beginning are EXTREMELY important in climbing the ranks after plat, but don't think that you're going to be able to get to high elo off your sick comms and cypher setups. That's not what kind of game this is. Valorant is an FPS first and foremost. You need to have good aim and good movement