it doesn't matter
phrase1
It is not important; do not worry (used to reassure or comfort the person to whom it is said).
- I’m afraid I’ve broken your mug. – It doesn’t matter; it was old and I was going to throw it away anyway.
2
I withdraw my previous statement (often used if it wasn't heard or understood).
- Maybe we could try fixing this part to the … no, wait, it doesn’t matter.