澳洲676签证被拒签~！求助啊，很急

676签证被拒签了，提供了6W的银行证明（冻结了三个月），工作单位是政府部门，准假信也开了，工资开的是税前6千，但是无法提供银行流水。还是被拒签了，是不是因为我是25岁单身女青年啊~！！！！拒签理由写的是：You have not demonstrated sufficiently strong financial,family,employment or other commitments outside of Australia as an incentive for your return.As a result,I am not satisfied that a genuine visit is intended and therefore must refuse you application.我该怎么重新准备材料啊,要注意哪些问题？