From my understanding, depression is associated with lowered serotonin (a chemical that is needed for the nerve cells and brain to function).
You need not worry, patients normally can recover with medication and counseling.

I agree with @sweet_pez, you should go for government hospital where you will only be charged RM5 (if I remember correctly) per visit with free medication supply.

I am sorry to hear that you don't have family support and community support from friends. However, you should not despair, because circumstances do change.

My last advice is, take it one day at a time, means to deal with things as they happen, and not to make plans or to worry about the future. :-)