They live on North Sentinel Island in the middle of the Indian Ocean and reject any contact from the outside world: The Sentinelese!
The Indian government has long since given up contact. The indigenous people of the Sentinelese had defended themselves too persistently and violently against external intrusion. Since the death of a missionary in 2018 it has become absolutely clear: this tribe wants nothing to do with other people.
They sought contact with the "primitive people"
When most people hear the term "uncontacted people", catchwords such as South America, the Amazon and the jungle come to mind. Very few have heard of North Sentinel Island, the Adamans and Sentinelese.
The Sentinelese are believed to have lived on North Sentinel Island, an Andaman island in the Bay of Bengal, for over 50,000 years. Not much is known about them, not even how many there are. It is assumed that there are 50 to 200 people living in small groups. In the past there have been a few attempts to get in touch with the "primeval cloud", but these have not been crowned with success.
In the 19th century, a couple with four children had been kidnapped from the island in order to research the people and gradually "civilize" them. Similar to the corona virus today, the abductees had nothing to counter the viruses of their outside world: the parents and children fell ill, the woman and the man died. The children were sent back to the island. To this day it is unclear whether they brought diseases among their people.
One missionary failed
In 1974 a film team tried to approach the island with coconuts and other gifts. For the documentary "Man in Search of Man" the crew wanted to catch recordings of the Sentinelese and their way of life. After 1974 some film and photo recordings were made during later expeditions of the Indian government. The "visitors" were always chased away with arrows and loud shouts. The island has been a "Reserved Tribal Area" since 1996, which is also intended to protect the Sentinelese, as they are still not immune to our diseases.
Despite the ban on contact, the American John Allen Chau tried to get to the island in 2018. He wanted to evangelize the locals. After two fishermen had brought him to the island and left him there at their own request, his body was seen a few days later on the beach, it was never recovered.