As someone who has forced entry into more properties than I care to remember, when I was called upon to do this, I always asked ' is the door wooden or UPVC'.
When the answer came back as UPVC .. that made me smile. As a rule most UPVC doors are opened within a minute or two, even when locked. If they had a letter box in the mid rail, better still .. the easiest type of lock to open from outside, even if the door is locked, is one mentioned in an earlier post, it is known as a thumb turn lock. This type of lock is deemed to be always open and can be opened in seconds going through the letter box. (The thumbturn plate is classed as the key).
The vast majority of UPVC doors are easily opened with a pair of mole grips in a few seconds .. scary.
Regardless of how many locking points are on this type of door .. the number of locking points are only good when it comes to stop someone smashing the door in with a ram. They are only as good as the quality of the cylinder within the lock. I am afraid most UPVC doors come from the manufacturers with a very basic lock cylinder which is easily opened from outside. Why would they fit a thirty pound lock when they can fit a ten pound one ?
If you want to fit a good Euro lock that will make life very difficult for a burglar have a look at this ..
https://tinyurl.com/y3ga6aok
As The Builder said earlier .. when you come into your property. Lift the lever to engage the multipoint locking system .. turn the key and remove it. A bit labourious, but by far the safest method of securing the door.
Dont leave the key in the hallway.
Fit one of these, it shouldn't restrict the door opening or interfere with the mail and it will keep me out. I used to fit one for free after I was called out to a burglary.
https://tinyurl.com/y5yuj2gg