People often (especially in low) just click queue and play soloq while they want to win.
They want to win or climb more than improve. They do same mistakes again and again. But the most powerful way to climb is mentality, mental setup and determination to improve.

1. Realize that improvement is more important than winning. If you're only focused on winning, you're missing out on opportunities to learn and improve. Remember, ranked is about improving your skills and becoming a better player.
2. Don't care about winning or LP, care about improving. When you focus on improving, wins and LP will naturally follow. Don't get bogged down by the losses or the LP gains, instead focus on what you could have done better.
3. Dont click queue midlessly, make sure to review your game and finding the biggest mistakes. Then just find solve and make sure to have this MINDSET after clicking queue : next game, i will do what i have learnt from previuous loss. (for example : I will help my laner push waves after gank so they wont die).
4. Stick to your main champs and main roles. Switching champions and roles too often can be detrimental to your climb, as it takes time to learn new champions and roles. Stick to what you know and focus on improving your skills with those champions.
5. AVOID Autopilot at all cost! Autopilot often causes TILT. Always think as much as you can during game. Always think before making decision (for example: joining fight? Check how many people are missing and how many people are there so you will see if its like 3v4 or 4v3. You will easily be able to leave fight before entering it when its bad fight).

Its hard to have a good mentality but if you will do this, you will definitely climb!