We have had more luck with our appliances:
* The clothes dryer only needed a new circuit board that cost half of a replacement.
* The microwave only needed a new magnetron that cost the price of a new microwave oven. - Some would find this insane, but none of the new microwaves matched the kitchen decor and replacing everything to make it match the latest fad would have been truly insane.
* The refrigerator’s gasket needed to be pushed back into its groove when it started to come loose.
As for your dish washing machine, we had problems with our first one and heard from a repair guy that you really need to rinse the dishes before putting them into it. Ever since doing that, we have had zero problems with our machine. Maybe that might aid your new one’s longevity.
There are plenty of dishwashers now that will do fine without rinsing the dishes beforehand, even e.g. LG models that are not expensive.
Needing to rinse used to be the norm, but if one buys a dishwasher in the 2020s that won't work without rinsing in advance, one is getting scammed out of their money and time by lazy manufacturers, IMO.