A useful word to know in English is “fault“, or “所為” in Japanese.
Here are some common usages.
- This is your fault.
- It’s Bryce’s fault that we’re late.
- It’s not my fault !
- Whose fault is this?
- You are at fault. You’d better apologize.
- The investigation found many people to be at fault.
Give it a try. But it’s not my fault if you make a mistake!!!