NHTSA Complaint #11573154 — 2020 TOYOTA RAV4

My vehicle that's only 4 years old stopped moving forward or backwards when putting the car in gear. The car turns on perfectly fine never gave us a warning or driving issues until the day it stopped moving on a highway. I got the vehicle towed to Avondale Toyota in Arizona and they told me not a single professional technician was able to find anything wrong with the transmission. I think to myself "not one of these professionals can find an issue with a car that's 4 years old? That's odd to me. But they advised me they could fix the vehicle with a brand new transmission for $8,000 but that's my only option at this point. I live paycheck to paycheck and this isn't something that could have happened to me at a worst time expecting a child in the summer. Im hoping it could be just a solinod or something like a misfire. Please help. Sincerely a father in need.