I recently bought a new 2020 Disco sport SE R-dynamic. Though the website and manual says that animated turn indicators and gesture tailgate are standard, but they are not actually as per original vehicle specifications.
I have a 2019 Disco Sport HSE with gesture tailgate. Sensors are located on both sides of rear bumper. You need to perform a smooth kick for tailgate to open/close. I have limited knowledge on animated turn indicators, but you can try and see if you need to select any option from settings for this feature to activate. Some features on Disco sport need to be selected to be active.