i need to vent and need some advice on how to help my addicted mother

hi. i don’t know if this is the right place, but i need to vent and would love some advice.
i’m 21 years old and my mother has been using meth for my entire life. it’s taken everything from her. a career, a home, her family, etc. she doesn’t know that i know she uses. she thinks the entire world is against her including me, thinks everyone is gangstalking her or out to get her. i’m just so tired of this and i don’t know what to do. i tried to ignore it for my whole life but now that i don’t live with her anymore it’s really bothering me because i can see things so much clearer now. she takes money from me and my family, causing me to not have a car or a job either because all of the money goes to her to support her habit. she lives in a motel alone in a horrible neighborhood. it is so difficult for me to live my life knowing she’s going through all of this and there’s nothing i can do to help her. i try to encourage her to get jobs or do anything really but she just turns it back on me and says i’m being abusive towards her. my entire life i have suffered intense emotional abuse from her. although i believe her actions have caused a lot of problems and damage in my life i still want to have a good relationship with her and for her to be clean. she was clean for one month and had a job and a nice apartment, until she relapsed and now everything is worse than it was before. i really have a lot more to say but i just needed to vent. if anyone has any advice on how to support her getting better please let me know. this is so so hard.