Guilt over drugs domestic violence and absent father

Sorry if this is long there is so many elements. My 2 year old sons father has been absent from his life for the last
18mths. His father has drug issues and domestic violence issues and had been offered unsupervised visits if he could pass regular drug tests he refused to do this so was offered supervised visits which he attended very rarely with me in a public place for a few months. Due to the continuing domestic violence it was recommended to remove me from the situation and have it at a contact centre when this occurred he refused and disappeared. i have since found out in the last 12 mths he has been charged with multiple serious domestic violence charges and assault charges and is looking at jail time, i have however heard in the last few months he appears to have settled down with another lady and is staying clean and spending time with his other 3 children which are much older. Because of the domestic violence issues in our relationship the courts ordered a 10 year Intervention order with no direct contact to my son or I but that he could mediate or contact through a lawyer to negotiate for visitation. i carry guilt every day am i doing the right thing by my son or should i reach out to his father and try and organise supervised visitation again, i struggled that he is the only child he does not see and how will my son feel about that he has already told me when he is older he going to tell his son its all my fault. In the time all this has been happening in the last 12 mths he has only made one attempt to see him on fathers day and refused to do supervised visits. I just dont know if i should reach out and offer supervised visits again or not??