Hi Kiz -
Welcome to the wonderful world of coding.
If you spend some time doing some puzzles here you will find the whole membership sort of acts as a mentor. If you get stuck on a puzzle and have a specific question and post it, you will likely get responses.
But here’s my general advice for you:
Do 100 clashes, and 20 easy puzzles, while at the same time, watching YouTube videos to learn.
If you can’t do a Clash in the 15 minutes allowed, you can search for that Clash on Codingame.tools and spend whatever additional time you need to do it.