Lenders do not write mortgage loans under $80,000. The cost is not worth it and lenders will lose money. The alternative is private loans but they charge high interest rates of about 20 - 30% and they are designed for short term use.
Most listings that have prices under $50,000. expect the buyer to pay 100% cash - no loans involved. You need to save up some money and buy a home the regular way. This is what happens when you vote for the wrong President.