Help to buy an engine

Taking care of my disabled sister and brother. It has been really hard on me trying to take care of my family since this epidemic. My hours at my job has shortened and reasonly I had to put my car in the shop and was told my engine is bad and need another one. He tells me the engine would be a total of $4000 for the engine and to put the engine in the car. Im barely making it and this happens to me. My car is paid for and I don't won't to try to finance one. My family really needs my support but this is just too much on me. Sometimes I wish my life would just end. I feel like the weight of the word is on my shoulders because my disabled brother and sister depends on me. I've tried everything trying to get a loan to looking for government programs to help me out and there is no funding right now or I don't make enough money for that much money.Please help me and my family. I am all they have. Thank you and God bless you all.