Abusive/toxic parents... how to deal with them?

I’m gonna go on a little rant here because I know I can’t be the only one who’s gone through this and besides my husband and a close friend I don’t really feel comfortable opening up about this. When I was very young my mother chose to walk out of my life and I grew up with my biological father and his wife. My father was not a good parent he did not know how to be one he used the excuse he never really had parents so he didn’t know how to be one and was just the provider excuse and for his wife she would mock me and chose to hold it against me that I held out hope my mother would come back one day. At first it started with physical abuse and when I was old enough to get myself a job and a shitty car then it was just emotional abuse. I left as soon as I turned 18 and never looked back.... I never wanted them to be in my life again, but at some point I felt guilty how could I do that to the people who raised me and I had siblings so how could I abandon them? So I chose to let them back into my life and after having them make racial and belittling comments to me I cut them off again. If any of you are wondering how cutting my parents off could affect my relationship with my siblings it’s that if anyone knows anything about an abuser is that they love to be able to control and manipulate those around them and they would twist stories up and make them choose between them or me. I don’t want my Siblings to have to choose because I know the repercussion of what happens if you don’t agree with them so for that reason I try not to keep too much in contact with them, but back to my story. After I met the most amazing man in my life he asked why I wasn’t close to them and suggested mending the bridge for my siblings so I did. At first everything was great and eventually they started trying to belittle him and embarrass me in front of him so I just chose to keep my distance for a bit since at that time I was getting ready to deploy the last thing I needed was that extra stress. After a very upsetting situation with them I have come to realize nothing will ever change and at what point do I stop being their punching bag ? I have not kept in contact with them since but they keep messaging my husband and I telling us they love us and really confusing messages. Has anyone ever dealt with a toxic parent in their life and how do you go about it ? I’m sorry for my ramble and if you made it to the end of this I appreciate it and if you are in the same situation know you are not alone ♥️ I hope one day my husband and I will have kids and I can give them the love I always wished for