Just wasted $73.63 on Adwords

Sorry to hear OP. Be prepared to lose a lot of money in PPC. It takes a lot of time and experimenting to get a campaign profitable. If it was easy, everyone would just dump their money into it and use the magic machine to print money.

You can't expect to go and use adsense and straight away make bank. It's something that requires trial and error. I reckon your LP was terrible and outdated.