Maybe in some 'wanda hurts tony fanfiction', it's more of an emotional hurt. Wanda could accidentally reveal some of Tony's deepest secrets or traumas, causing him mental anguish. This could lead to a rift between them and the other Avengers having to deal with the fallout.
I'm not sure of specific 'wanda hurts tony fanfiction' stories off - hand. You could try searching on popular fanfiction websites like Archive of Our Own. They have a vast collection and you might be able to find some stories with that theme by using their search function.
At first, it might be a bit rocky. Wanda is used to being on her own and having her own way of doing things. But Tony's charm and his genuine care for her would start to break down her walls. Eventually, they'd form a deep bond. Wanda would come to trust Tony completely, and Tony would see Wanda as a daughter. They'd support each other through tough times, like when the Avengers are facing a big threat.
One common theme is the power dynamic. Tony is a tech - genius and Wanda has her reality - warping powers. Fanfictions often explore how they balance and complement each other's powers.
One common theme is betrayal. Steve might do something that goes against Tony's trust, like hiding important information. For example, in some fics, Steve withholds information about a threat that later endangers Tony.
Another theme is the redemption of Tony. Wanda has had her issues with Tony in the MCU, but in fanfiction, their relationship can be a way for Tony to redeem himself in her eyes. It could be through acts of kindness or by changing his ways a bit to be more in line with what Wanda values.
Perhaps Pepper, in an attempt to protect Tony from himself, takes extreme measures. For example, she could sell off Stark Industries' technology that Tony was using for his Iron Man suits without his consent. This would be a huge betrayal in Tony's eyes as his technology and the Iron Man identity are so closely tied to him. It could lead to a rift between them that is difficult to mend as Tony feels violated and Pepper believes she was doing the right thing to keep him safe.
One common theme is the power dynamic. Tony's technological prowess and Wanda's magical abilities create an interesting contrast. Another theme is redemption. Sometimes they help each other overcome past mistakes.
There are some great tony stark x wanda maximoff fanfictions. Some focus on alternate universes where they team up in unexpected ways. Others might explore a more romantic relationship between them. It really depends on what kind of story you're interested in. You could also check out fanfiction.net, as it has a large collection as well.
There's also 'The Unlikely Alliance'. In this fanfiction, Tony initially has his doubts about Wanda due to her powers, but as they work together on a scientific project, they start to see each other in a new light. It delves into their complex personalities and how they grow closer.