You will be judged with the judgement that you judge.
With what you measure it will be measured back to you.
Consider the plank in your own eye before you look at the plank in your brother's eye.
You can't help your brother until you first help yourself fix what needs to be fixed. You have to be able to see clearly to be of help to others.
It doesn't say we can't help our brother. It says we can't help them when we still have areas in our life we need to attend to first.
Work on those areas. Attend to them. And ask God to be able to help your brother in love, not in judgment.