My family will be homeless in 3 weeks after my mom lost her job because of COVID-19. What can I do?

A little background: I’m 19m, my parents are divorced, I have a 14yrs old sister and we live with my mom. My mom was working for a company for 7 years until they shut down 3 weeks ago because of the virus, my sister and I were receiving support to study and my grandma had a yearly pension from my grandpas death. Now she’s struggling to apply to financial help, my sister and I lost our support money and my grandma’s pension ended because she reached the age limit, I myself have a part time job that barely helps us pay our bills and food. The worst part of this is that our situation isn’t rare, I myself know many people that have gone through this because companies in my country shut down instantly. <br><br>Where I live we have to pay rent monthly but you pay it 3 months in advance so the landlord knows you have enough money to pay the first 3 months, after that you pay every month, the whole point is that we don’t have enough money to pay the rest of the rent, we asked the landlord to consider the situation but she won’t budge, we can’t reach out to my dad because he has literally said he’s not responsible for our wellbeing and hasn’t paid child support in years. So if we can’t find a way we will be evicted and won’t have a place to live. That’s why I came here to see if anyone has advice on what we could do in this situation, if you have any suggestions I would be thankful.