Am I being unreasonable ?

Hey sisters I’m needing some clarification if I’m in the wrong.
Married 27 years and it was like a fairy tale for 21 years then he hurt his back working and he completely changed. Shut me and the 3 kids out and eventually I found out it had befriended 100s women from around the world on Facebook and would click emoji 😮 a lot! I also found out a year ago whilst I was depressed after being bullied that he had send flowers, chocolates and a teddy bear to a woman in Canada. She was depressed and had wanted to take her life he said. He had sexual dreams about her and told her about them.
I agreed to not give up if he got counselling and made an effort and in turn I would also. He had 3 sessions in 8 months and made little effort to put out marriage back together. He lives downstairs now and has done for a while so we could work through things with a little space. I had covid in august and he didn’t ask if I needed anything or if I was ok for 4 days yet came up and took food knowing I couldn’t go to the shop. He had a cold not covid at the time and said I didn’t ask how he was either!
Now he pays $67 fortnight CS $50 month electricity and $55 for his part of the phone bill. He’s in jobseeker and says he now has $9000 credit card debt since living down stairs and can’t afford to pay me anything. We had a verbal discussion and agreed then he would pay half of everything kids needed. Middle child is starting high school $335 for uniform and also needs phase 2 of braces $6000 ams he’s redialing to pay half again. He’s now saying child support should cover that.
He’s told the eldest he wouldn’t make her pay $200 for getting her phone fixed that she threw and broke and I’m being harsh. He’s told middle child he pays electricity and phone and I’m being unreasonable asking for rent.
He sends messages uo with kids and the latest is I need to pay for the 2 bunnies food etc as he can’t afford it …. He bought them for the kids not me and now if I don’t pay i believe he will say he needs to get rid of them ( watch this space for that)
I have relationships Australian again in few days so hoping to get clarification from them on if I’m being unfair.
Also whilst on jobseeker he is “helping a friend “ renovate their house. I’m talking everyday for weeks and he’s told middle child he will get paid $2000. He denies it ams says it’s a favour and he also turns off his location so kids can’t see where he is.
I’ve written in before and so many said I need to kick him out but right now he’s paying a victim and has no money and he will make sure he cries poor and tell kids I’m not being fair etc.
Am I in the wrong here should I let him live rent free ?