What's the name of the person who loves to go out?

People who love to go out are called backpackers.

Backpackers, also known as donkey friends, refer to people who wander around in groups of three or five or single-handedly, that is, people who carry backpacks for long-distance self-help tours. Nowadays, people who are mainly looking for excitement, such as mountaineering, hiking and adventure, aim to know the world, know themselves and challenge the limits through travel. Travelers generally like to travel together, and some have prepared tents and sleeping bags to sleep in the wilderness in the mountains. Another way of saying it is from the homonym of "traveling friend", which means traveling friend. Taiwan Province Province often calls them self-help tourists or self-help tourists, while Hongkong calls them backpackers.