Toyota Camry 2015 SE car wont start , electical issue

Toyota Camry 2015 SE , was running fine then one day wouldnt start. i
assumed it was the battery as it was a couple years old ,  swapped it out when
to turn the key and it still wouldnt start. my carhead roomate suggested it
sounded like my starter so we swapped that out aswell . and still wont start. i
have rechecked all my connections and now the car still wont work . help pls