You can focus on doing high-level quests and hunts. They give good experience points.
You can start by focusing on completing side quests and special events. These often offer valuable rewards and can help you level up your gear and skills.
You can focus on farming rare materials to upgrade your gear and weapons.
You need to complete various challenging quests and hunts. Also, make sure to upgrade your equipment regularly to increase your chances of ranking up.
One option after the Monster Hunter story is to aim for completing all the side quests and achievements. Another is to experiment with different weapon builds and strategies to master the game even more.
After the story, you can focus on perfecting your builds, taking on challenging multiplayer quests, or exploring all the hidden areas of the game. There's also the option to aim for high scores and achievements.
You could try exploring different weapon builds and mastering them to take on tougher challenges.
You could start farming for rare materials and upgrading your equipment to take on tougher challenges.
You could explore new areas, take on challenging optional quests, or try to upgrade your equipment to its maximum potential.
After beating the story, you might want to focus on multiplayer hunts with friends or join online communities to share strategies. You could also aim to complete all the achievements or trophies.
After the story, you might want to try out different weapon combinations and master their playstyles. Also, explore multiplayer quests with friends for added fun.