Bigger Tank (Florida Park, Roodepoort)

Hi everyone, I live in Florida Park. My mom spent her savings to surprise me with quite a few goldfish, but they are in a small 100L tank and I desperately need more space. I am completely broke and cannot afford an upgrade. Does anyone have an old, dusty 4-foot tank or bigger sitting in their garage or just sitting around that they would be willing to gift to help me keep them alive please? I don't care if it's dirty or needs a clean! I will greatly appreciate it🙏