What to do when parent doesn't want me to go far from home because of mother's trauma from her side's family??

I'm just 20M from tier 2 city studying in 3rd year of college rn in different town, but for future, i already gave several hints to family that I'm gonna go maybe more far from home for better future prospects, since they also arrived from tier 3 city to tier 2 city for same reason...... but the problem is my mother(working woman) doesn't want me to go far from home, she starts crying occasionally that she doesn't like living without me at home rn and when i try to give her understanding of reality, she accepts it & move ons but does same after some time interval of around once every month, she was over-possesive, over-protective for my whole childhood, that resulted in my lack of decision taking skills.... Reason behind her this suggestion is her life long trauma by his brother(Mama), My mamas are biggest assholes i have ever seen, never took good decision in his whole life, unk ghar k kalesh were too much 'kaleshi' like mami, nana-nani k khane me sleeping pills & dusri 'weird' medicines daal deti thi, she have filed court-case of child-support while staying together with mama himself, harassment case against nana-nani, my nana got depression & severe illness because of tension and died in that & what not..... now my mum is traumatized by this & thinks that they are gonna end up in loneliness like nana-nani if i left home, i have told them already that i ain't gonna left them like mama took dumbest decisions.... she tells me things like she's gonna stay with my future wife like mom-daughter unlike saas-bahu these days like she won't like my future wife to suffer from what she is suffered... she already saved up tons of money to gift her & what not, she even says things like we won't have a problem if future wife is from different caste, so feel free to tell them if i have serious relationship (she still applied small filter though), problem is she wasn't always this liberal before, this happened after some incidents few years ago, she just want one thing that i won't leave her, although my father is always supportive of me but i am scared about mom..... what to do in this? like i can't declare sudden decision when i graduate & get a job later.... i am thinking about renting 2 homes nearby when i get stable job far from home since i also want to progress in my career & life..... Can anyone guide me through this??? because i am in fear that she would do something wrong if i took wrong decision.....