German phrase
Das war meine Schuld.
Meaning
It was my fault
When to use it
I say I caused it. It is a simple way to admit blame and say sorry.
Example dialogue
Du hast mein Bild zerknittert!
You crumpled my picture!
Oh nein. Das war meine Schuld. Ich male dir ein neues.
Oh no. It was my fault. I will draw you a new one.