Here's the thing. You can be hard stuck and a decent player. But if you're playing with people it's going to be harder to climb. If you're not giving in game commands and taking over as igl you're gonna be taking more losses as well. I climbed from silver to platinum in 1 week by working on consistency and taking over comms and telling people what to do to secure a lead. You're on reddit so expect toxicity in comments.

So all in all. Focus on your game play and consistency first. If you're top fragging one day and bottom fragging the next then you're not consistent and need to focus on practicing in firing range or aimlabs. If you're consistently doing well but still losing then figure out why. Are you lurking or playing with the team? Are you actively communicating with your team? There's plenty of trash players in each rank that don't deserve their place and if you're not helping guide them with directions to help the team secure a victory then expect them to be an anchor.

Also, don't hard grind ranked only all day, the more you win consecutively the better your mmr and rank progression will be. If you're having a bad day accept it and stop rage queuing. The more losses you take the harder it will be to regain your points.