You can't put all the blame on him. It takes two to make a marriage.

你不能全责怪他，结婚是两个人的事。

《牛津词典》

You can't put the blame on the newcomer because it is unfair to blame him for the fault. It is you that is to blame.

你不能责怪那个新手，因为把这个错误归结到他身上是不公平的。只怪你不好。

youdao

You can't put the blame on the newcomer because it is unfair to blame him for the fault. It is you that should be to blame.

你不能责怪那个新手，因为把这个错误归结到他身上是不公平的。只怪你不好。

youdao

"It doesn't seem to me that in this case you can lay the blame for the losses on the nature of ETFs, " the banker said.

BBC: UBS loss 'came from lots of small trades over months'