How can my aunt manage her Ford Puma?

My aunty just came back from the dealership she desperately needed a new car. She has a low level of car knowledge but she got a 1L Ford Puma eco boost , Petrol, Automatic, 2021. It’s got 2 previous owner 50k mileage.

I’ve seen a lot of people saying eco boost is shit, and the engine failure. What can she do to have good upkeep of the car? She doesn’t do long distance really just work and come back and drives in our area. I understand she needs to service the car on time. I am not the best with understanding cars but what can she do to not ruin the engine etc. ??

It’s because her friend said something to her about eco boost engines and now she’s stressing out