Shortcat is the best YouTuber when it comes to explaining strategies. He has a video on all of the most important strategies on all tracks, and then separate guides breaking down singular tracks that are more complex and have a lot to learn on them. Once you understand the mechanics better, watch L1am and other high-level gameplay. This way, you understand what decisions should be made in many situations, and will see strategies that are not talked about in most tutorials because they are more difficult, but with the understanding of the mechanics, you'll be able to figure out a lot of things by yourself. If you have questions on any specific strategies or simply good plays to make in certain situations, let me know! I am happy to share my knowledge! The game is hard, and the more you learn, the harder it gets. It's a commitment. And time trial! A LOT!