Family law and false accusations of domestic violence

Hi

New guy here I have been suffering depression for many years I got married to a woman with 5 kids then suffered a massive heart attack my marriage failed. I had two children to my wife and on the day I was moving my wife sent her bf round to get me out of the house and he assaulted me in front of my kids. I still saw my kids every weekend my wife put a dvo on me cos I punched a hole in the wall after I was assaulted. She wasn't there. I continued seeing my kids then one day she told me she was going to a funeral in Victoria where here family is. She also said she wanted to move there I said no as I would never see my kids and I don't like the environment they would be in. The mother is very unfit person and brother just as bad. She told me there's way round that. So she took off claiming domestic violence which never happened recently I was charged by the police for breaching my dvo first time ever. It was a "technical breach" for posting pictures of my own kids on FB which I have been doing since day one. I am really struggling as I constantly make mistakes at work which I never did. I started smoking again and have been trying to get legal assistance but noone wants to help me. I feel like I'm drowning and miss my kids so much I dont even go near and kids shops as it brings back memories I'm so miserable im watching my life go down the toilet and I can't stop it. Im so angry I also pay child support