The reverse thrust on the a380 does not get deployed on engines 1 and 4
They a380 in real life doesn’t. It can stop just by brakes. Go on YouTube and search for a380 landings.
In real life, that’s how the reverse thrusters are.
A number of reasons behind this.
Firstly, it has enough power with the inboard engines/brakes for decelerating, so additional engines aren’t needed.
Also, the A380 is massive - outboard engines are likely to be close to the runway edge, where it’s more likely to pick up debris than on the runway surface.