It’s nonsense to suggest that if you drive an automatic car you’re not as engaged or as alert as you would be driving a manual. All cars require the driver to be alert and engaged - if you’re not, then it’s you, the driver, who is at fault, not the car.
The suggestion that you’re not doing “proper driving” in an automatic is rather silly, too. Certainly, you don’t do the gear changes, or find the biting point (which I imagine is what many manual car drivers enjoy), but you still have to be fully aware when driving - of your own driving and of what is going on around you; in effect, “proper driving”.
Any car can develop a fault, manual or automatic.
Anyway, Chrisks, I’m glad you’ve reached a decision. Happy car hunting 😁.