Good news is that if you've been using the key it shouldn't be deadlocked
Find something that you can slip between the door frame and either hook one of the interior door handles and pull or using the same try and hit the unlock button on the center console
If the above doesn't work and you're tempted to break any glass the driver or passenger front door windows are the easiest to replace
Drilling the lock out won't get you in, either the back of the lock has broken or more likely the cable that goes between the lock and the door catch assembly has broken.
There is a way to get into the tailgate but it can be very difficult, saloon boots are a bit easier but it's not something to be put on open forum.
Russ