to be in a better or worse situation; to be poorer, unhappier, etc. than before or than sb else
be better / worse off (doing sth)
to be in a better or worse situation
She's better off without him.
be worse off (than sb / sth)
to be poorer, unhappier, etc. than before or than sb else
The increase in taxes means that we'll be £30 a month worse off than before.
Definiciones del Oxford Advanced Learner's Dictionary, 9.ª edición