I think you could start by searching on Tumblr. There are many fandom blogs that often recommend or link to good points fanfic. Also, don't forget to check out Reddit - there are subreddits for various fandoms where people share and discuss fanfics. Sometimes, asking for recommendations in those subreddits can lead you to some hidden gems.
You might find points mentioned in the plot when characters achieve certain goals or overcome challenges.
You might find them on popular fanfiction websites like Archive of Our Own or Wattpad.
Another place to check is Wattpad. Although it has a wide variety of content, there are some really great 'We Bare Bears' fanfics there as well. You might need to do a bit more searching through the different genres, but it's worth it. Some authors on Wattpad are very creative and put a unique spin on the bears' stories.
You can try searching for it on popular fanfiction websites like FanFiction.net or Archive of Our Own. There are usually a lot of Naruto fanfics on these platforms.
You might be able to find it at your local comic bookstore. They usually have a wide selection of comics, including less common ones.
You can find good kids history stories in the library. There are many children's history books that are full of interesting tales.
You can find young girls stories in children's books. Libraries are full of such books with various stories about young girls facing different challenges and having great adventures. For example, the 'Anne of Green Gables' series has wonderful stories about a young girl's life.
You can start by looking on fanfiction websites like Archive of Our Own (AO3). It has a large collection of 'We are Miraculous' fanfictions, with different genres and themes. There are also filters on AO3 that can help you find the exact type of story you're interested in, such as by rating, length, or specific characters.
We can find good motivational stories in books. There are many books dedicated to motivational stories, like 'Chicken Soup for the Soul' series. They have a wide variety of stories that can touch your heart and inspire you.
You can find good Mandarin online stories on some language learning platforms. For example, Duolingo sometimes has some simple Mandarin stories for beginners. Also, there are some Chinese - focused language websites like ChinesePod that offer a variety of Mandarin stories.