If you can choose the airline you know what fleet the plane comes from. If you search on the flight number on e.g Flightradar24 you can see what model they used on the flight for several recent flights.

But in the end I suppose the reality is that even an un-fixed MAX-8 is orders of magnitude safer than your car ride to the airport. So before picking aircraft models, ensure you ride the train to the airport and not a taxi...