Not my circus, not my monkeys ....

[Autumnwindinthewillows]

Anyone got other idioms for "Not my problem"?
I am rather over invested in something that is not entirely my issue to worry about and could do with a few pithy sayings to keep me diverted ...

None of my beeswax. (I know it’s really wrong, but I like it.)

I've got bigger fish to fry

I'm sorry, you've mistaken me for someone who gives a shit....

I like 'your lack of planning is not my emergency' for people who expect you to be onstandby for their self inflicted problems