verb
BAD : I wasn't even there so you can't blame on me.
GOOD : I wasn't even there so you can't blame me.
GOOD : I wasn't even there so you can't blame it on me.
BAD : Who is to be blamed about this?
GOOD : Who is to be blamed for this?
◆◆◆
blame sb ( for sth ): 'Nobody can blame you for telling the truth.'
blame sth on sb/sth : 'Whenever children behave badly, people blame it on the teachers.'
Compare: 'He always tries to put the blame on me.'