Well, another way is to look at fanfiction.net. Sometimes, users there write really interesting stories about this pairing. However, the quality can vary. You might need to skim through a few to find the ones that really catch your interest. They could range from adventure - based stories where they team up against a common foe to more character - study - like fics that explore their relationship in different ways.
Sure. You can start by checking out Archive of Our Own (AO3). It has a vast collection of fanfics on various pairings, including Captain Marvel and Valkyrie. Just search for the tags related to them and you'll find a bunch of great stories.
There's also 'A Meeting of Heroes'. This fanfic focuses on their first encounter. It delves into how they initially view each other and then gradually come to respect and trust one another. It has some really interesting dialogue exchanges that bring out the best in both characters.
One common theme is friendship. Given their strong and independent personalities, fanfics often explore how they become friends and support each other. For example, they might start off as rivals but gradually learn to respect and rely on one another.
A different plot could be set in a post - Endgame world. Valkyrie is ruling Asgard and Captain Marvel is still out in space protecting galaxies. One day, a strange energy signal draws Captain Marvel to Asgard. Valkyrie is initially cautious but soon realizes they can work together to figure out the source of the signal. As they work together, they discover new aspects of each other and their relationship blossoms against the backdrop of a rebuilding Asgard and a changing universe.
One idea could be a story where Captain Marvel and Valkyrie team up to fight a new, powerful enemy that threatens the entire universe. They start off not getting along due to their different fighting styles and personalities, but as they face challenges together, they learn to respect and rely on each other.
You can try fanfiction websites like Archive of Our Own (AO3). There are a large number of fanfics there, and you can use the search function to specifically look for Valkyrie x Captain Marvel ones. Just type in the relevant tags and start exploring.
A common theme is female empowerment. Both Captain Marvel and Valkyrie are strong female characters. Fanfics often explore how they use their power and influence to make a difference. For example, they might fight against a patriarchal villain or system.
A possible plot could be that an ancient artifact has been stolen and it has the power to disrupt the balance between Earth and Asgard. Captain Marvel and Valkyrie are both called upon to retrieve it. They initially suspect each other of having ulterior motives but soon realize they are on the same side. They then embark on a journey filled with battles against various intergalactic pirates and magical creatures who also want the artifact for themselves.
A potential plot could be a training arc. Valkyrie, with her combat skills from Asgard, could train Captain Marvel in some traditional Asgardian fighting techniques. This would not only improve Captain Marvel's skills but also create a bond between them as they spend time together in the training grounds.
There's 'Captain Marvel's Companion' which is also quite popular. In this fanfic, the reader gets to accompany Captain Marvel on her adventures across different galaxies. It's full of action and some really sweet moments of friendship and mutual respect between the two.
One possibility in Captain Marvel x Valkyrie fanfiction could be an adventure where they team up to fight a common enemy. They both are strong and powerful characters. Maybe they start off not getting along well due to their different personalities and ways of doing things, but as the story progresses, they learn to respect and rely on each other.