Do the main story missions first. They usually give a good amount of XP and money which helps in progression. Also, focus on daily challenges as they are easy to complete and offer nice rewards.
Sure. In the Red Dead Redemption 2 story, fast horse - riding is a key aspect. You start with a basic horse, but as you progress, you can get better, faster horses. To ride fast, you not only use the controls but also need to understand your horse's behavior. If you take good care of your horse, feed it, groom it, and bond with it, it will perform better when you ask it to run fast. There are also races in the game where you can show off your horse - riding skills and compete against other characters. Fast horse - riding is not just about getting from point A to point B quickly, but also about the experience of being a cowboy in the game world.
Michonne does die in the comics. The circumstances surrounding her death were quite dramatic and had a significant impact on the story's progression. It happened during a major conflict with other characters.