Dealing with Toxic Family Dynamics

my family has been in a toxic cycle for years. poor, abused, personal and family trauma etc etc. now my single mom is married to a guy who we thought would contribute to our happily ever after bc he was kind to my mom and had $. 3-4 years later and my moms in a verbally and financially abusive marriage. she’s had a bad childhood herself so she’s toxic as a mother sometimes. i always forgive her internally though because i know her tragic past causes her behavior and she also needs me. i’m in college so i only visit during break. as much as i love my family and miss them, the toxicity such is too much to bear. my mom randomly yells at me or insults me, my brother is barely around because he’s independent now, and my mothers husband is annoyingly condescending towards me. no one at my school understands toxicity like mine and it feels and it’s really isolating. i’m always thinking about the future because i feel like that’s the only time i’ll be fully happy. i wish i could help my mom leave but we’re financially dependent on him. thx for listening !