Suzuki Vitara Fuel pump and control unit broken at the same time?

Hello! I bought an 18-year-old Vitara about 4 weeks ago. Unfortunately he went out now during the ride and didn’t jump again. I had him to the workshop. The first suspicion was that the fuel pump was broken. Then a new automatic fuel pump was installed. Then he still didn’t jump on. Now they have the control unit suspected. Can both really have broken once? Or maybe the Kra I have a little feeling that the workshop doesn’t really know what’s wrong with my car! What do you think?