Sentence 1: It's impossible to make money online. 
 Sentence 3: He found a service that let users promote dating websites and be paid 
 Sentence 4:  He signed up and promoted a dating service on social media 
 Sentence 5:  After six months Charles didn't make a single dollar from the service 
 Option 1: But Charles is always looking for a way to make money online. 
 Option 2: Charles did not find any way to make money online.