Is Taraweeh Sunnah?
Dua e Qunoot is not a requirement. You can make any dua in any language in any rakat or even every rakat. This is true for all salats including taraweeh. Witr is not a name for a salat. When you make a salat’s number of rakahs odd by adding an additional rakat to it, this act is known as making witr. Generally people who recite Qunoot they recite it in the last rakat.