Help our family to buy a house

We have been notified to relocate due to landlord selling current residence. My husband was diagnosed with narcaplesy with cardiac dysfunction due to an accident from a few years ago. He is on oxygen and numerous medications. We spend the majority of our life going to endless doctors and hospital visits on a weekly basis. My husband fell off a 3 story roof and suffered a traumatic brain injury that brings on seizures. My husband and I have a large family and we have been homeless before coming to live in our current home. We are in the process of looking for a new place as one place fell through for us. We have lost so much in last few years and ask for so little. We also have 3 disabled kids that are currently still in school. We have no support from other family members as we are on our own at this point. We have reached out to other agencies but were turned down, which is why we are turning to Gofundme as a last resort for help in our current situation. We are on fixed income enough to just pay for rent and bills to barely get by. Any help will be greatly appreciated at this time. We thank you for taking the time to read our story.

(UPDATE)
on May 17 our situation has just gotten even more worse. Landlord has informed us that as of June 1st we must vacate to sell this house that has no buyer as of yet. We are at our wits end that we are considering buying this house so that we can live our lives in peace. We have exhausted every option and got more doors slammed in our faces. We have ran out of options and have nobody to turn to or anyplace to  go at this point. We are beaten and desparate right now. We have given up on all hope which is very bad. Please help us in our time of need. Thank you.