I'm about to go into depression

To date I'm battling with We Buy Cars since the day of purchase which was on 2023-01-16. I tried multiple times to handle this matter in a civilised manner but I'm not winning as I'm being taken for granted. I didn't know that trying to buy a car at their dealership would become my worst experience ever as they tried to fix the vehicle more than three times without success hence they keep on assuring me that the car is fixed but everytime same problem persist. I'm loosing a lot of money lately because I'm forced to resort to other means of transportation but yet I'm paying for the car installment and as well as the car insurance on the vehicle I hardly had for a week in almost 3 months. I'm drained