Base on this OEM diagram with the vehicle info you provided, the piece you are looking for isn't sold separately. https://www.toyotapartsprime.com/oem/toyota-8791004230.html?Make=Toyota&Model=Tacoma&Year=2017&Submodel=&Filter=(t=Limited;e=6+Cyl+3.5+L+GAS) . It most likely fell off your Tacoma.
I just replaced my damaged front right fog light. I found the OEM Toyota replacement online for a good price so I went ahead and ordered it. It's a perfect match so i'm really happy with my purchase. https://www.toyotapartsprime.com/oem/toyota-8121002160.html