IPhone 5s battery seems to be draining faster? 60 percent gone in 2 hours of usage?

It seems to be draining faster than it did. Is it just because I've had it for almost 2 years? I'm worried someone could've hacked my phone and that's why it's draining but I installed the lookout app and it said the phone hasn't been jail broken and doesn't have malicious activity. Can I trust that? Am I hacked or is it old battery?

You wouldn't need an app to tell you if it was jailbroken or not since that has to be done by the user. A phone being hacked wouldn't necessarily result in battery drain. Also since you said its an iPhone, the possibility of it being hacked in the 1st place is next to nothing.

So, it simply could be age of the battery. Usually most change their phone every 2 years, so the 6s would have been that phone for you. Could look into getting a 7/7 Plus, or check an Apple Store about replacing the battery.

The more charges you use on your phone the weaker the battery gets. You just need a new battery