If i understood correctly, you were having $60,000 and decided to open a sport betting & casino site? If i were you, i wouldn't think i would do that since you need much bigger than that amount to start a site, especially a casino. Then you said you paid $2000 for 3 times, that bring you have around $66,000.
My advice for you, just re-started from your bussiness on 2017 back then ,maybe with a new site since you have sold your both site.
Your advice isn't helping OP to be honest, that's like saying just don't be sad to a person that is clinically depressed. It's not easy to restart a failing business especially if it has been down for a long time now. I wanted to do some donation but I too am a man that needs money and I have no choice but to choose myself first before anyone else.