Brake Drum Wheel Cylinder problems of the 2017 Toyota Highlander

I had this car 2017 brand new, after 10000 mile, I heard some noises for my front wheels, I did my oil and maintance service often by Toyota dealership,I told them all the time about brakes and front wheel make some noises, they always everythings looks fine, after 2 yrs I had engine check lights on, I went to Toyota dealership, and they sayed it s not covered I have pay my own money for fixed, they sayed engine misfire on cylinder, for new car only driving 2yrs, it s happened Feb/05/2019, after 6 months they found front passenger outer cv boot leaking and I have to pay my own packet too, and now I have again problem , when I am driving on freeway about 70 mgh I heard some noise on my car back seats down, when I looked under my car there is no crack or leaking, looks everything good, I dont know where is noices comming from my under car, I just went to maintence today again Toyota dealership they sayed everythings normal, I dont know now what should I do, I am not really happy with my new car and with Toyota.