Secure sliding doors
Sliding doors are made of glass, so a lock might not be useful. You can secure sliding glass just by sliding it open with a metal or wood rod to have something to reinforce the door.
Reinforce door jambs
When it comes to non-glass doors, we shouldn’t be tricked into believing that they aren’t weak as well. In fact, the weakest points on a door are the lock, jamb, and hinges.
The best thing to do is to reinforce all these points on all external entryways. Don’t worry, it’s not complicated! In fact, you can get the needed supplies from Amazon and do the job yourself.