Hi im new to this forum,i wanted to ask you guys a question.

Im 22 years old and i live with my parents i have untreated ADHD my parents were never willing to get it treated (im guessing because off the costs).. My life is 1 big chaos and im confused all the time im filled with stress,anxiety, frustration and anger because i cant find a job and i cant keep a serious relationship because my peers expect me to be like a responsible adult that works and is organized. I sometimes worked with my father on unnoficial jobs but thats over because he would let me do almost all the work and then take his cut from the work i did (50% or more).
I think my parents are very manipulative and i think i cant trust them and thats why i need you're help because i dont have enough focus to see the big picture..
(i hope this makes any sense.. )
Now,to my question:

My mom wanted to buy a occasion car so she asked me to buy it with her so we would share the car i agreed and payed $1500 for the car it were all the savings i had (total cost of the car was $4000). She also payed the insurance for the car ($300/year) and tax. I learned to drive with the car and got my driving license but i could only use "my" car for working purposes if i wanted to go to friends with "my" car my mom always said no and 1 day i seriously had to steal my own car to go to a friend...
Now 3 years later she got a new car from her mom so she wants to sell the car i helped her to sell the car for $2000 (atleast thats what se tells me..).

Now i expected maybe she would give me maybe 500$ back from the money i invested in the car. But no i get nothing not a single penny she just sold "my" car right after she got her new car wich she got from her mother so i cant use it. And now i have to search for a job without a car wich is very difficult because i need to be able to easily get to my job every day...

Now i want to ask you who is wrong here? Is it my mother or am i going crazy and its me thats wrong??