It isn't your fault.

it Pronoun

— used to refer to an object without identifying or describing it; the object might have been described earlier in the text. The house was very big. It had many rooms. — used to describe the weather It is very hot today. I'm staying in because it is raining — used to describe a situation in general I don't like it when people tell me to do something. It is hard to find a job.

it Abbreviation

— It can be a short way of writing: — # Italy or Italian — # Information Technology, the use of computers

isn't Contraction

— A shorter way to say "is not". He isn't my brother. He is my uncle. It isn't raining, it's sunny.

your Pronoun

— Your things are things which belong to you. Can I eat some of your ice-cream please?

fault Noun

— If something is your fault, you did something wrong or didn't do something right. It doesn't matter whose fault it is, let's work together to make it right. I'm sorry. It's my fault. I forgot to turn it off. It's clear that both sides are at fault. — A fault is a problem or a mistake. We found a few faults in the plan, but we'll fix them later. — A fault in your character is something about you that is not nice or good. The other girls thought that her only fault was that she was really stupid. — A fault is a long crack in the earth. The earthquake occurred near the San Andreas fault. — In sports like tennis or volleyball, a fault is hitting the ball in the wrong way, or to or from the wrong place.

fault Verb

— If you fault somebody for something bad, you say they did something wrong or didn't do something right. You can't fault him for not knowing about the change.