Then it's either not genuine Apple or it's not Thunderbolt. This is what an Apple Thunderbolt cable looks like:
https://www.apple.com/shop/product/MD862LL/A/apple-thunderbo...
https://www.apple.com/shop/product/MD862LL/A/apple-thunderbo...
Correct link: https://www.apple.com/shop/product/MQ4H2AM/A/thunderbolt-3-u...
What a mess…