One common theme is Matt's internal struggle with his pain. Since he's hurt, it often explores how he copes with his physical and emotional pain while still being Daredevil. Another theme is his relationships, like his friendship with Foggy or his romantic interests. How they react to his hurt state and support him is often a big part of the stories.
Black Widow would be a likely ally. They both have a background in street - level combat and stealth. They could work together on a mission that requires infiltration and taking down enemies quietly. Their skills would complement each other well, with Daredevil's enhanced senses helping to detect hidden threats and Black Widow's combat training and espionage experience being crucial in executing the mission.
In this fanfiction scenario, Matt Murdock could bring a whole new dynamic to the Avengers. His skills as Daredevil, like his enhanced senses and combat abilities, would be quite an asset. Maybe he'd initially clash with some of the more brash members due to his more reserved nature. For example, he might have a bit of a tense encounter with Tony Stark at first, but over time they could learn to respect each other's strengths.
It's really hard to say. Batman has a vast array of high - tech gadgets and is a master of martial arts. But Daredevil has his super - enhanced senses which give him an edge in combat. If it's a straight - up fight in a dark alley, Daredevil might be able to use his senses to anticipate Batman's moves. However, Batman is very strategic and could potentially use his gadgets to disorient Daredevil. So it could go either way depending on the circumstances.
It's not so straightforward though. Daredevil is a highly skilled martial artist and his enhanced senses could potentially allow him to anticipate Spiderman's moves. If the fight took place in a very enclosed and dark space, Daredevil might be able to use the environment to his advantage and land some good blows on Spiderman.
You can start by looking on fanfiction platforms like Archive of Our Own (AO3). It has a large collection of Daredevil fanfics. Just search for 'Daredevil Matt Hurt' and you'll get a list of relevant stories. Another option is FanFiction.net, though the tagging system there might require a bit more digging to find exactly what you're looking for.
In a 'Daredevil meets the Avengers' fanfiction, there could be an epic battle. Daredevil's unique fighting skills and enhanced senses would add a new dynamic to the Avengers' team. He might start off as a bit of an outsider, having to prove himself to the likes of Iron Man and Captain America. Maybe he'd help them out in a street - level fight that the Avengers initially overlook, showing his value in a more grounded combat scenario.