The events that occurred between Tomb Raider: The Last Revelation and Angel of Darkness have been theorized and debated among the fanbase for some time. While there was an Angel of Darkness deleted scene that was eventually released, showing a flashback of Lara Croft meeting a mysterious shaman after the events of The Last Revelation, it didn't quite reveal the full picture canonically.
However, 23 years after the launch of the fourth game, we finally have a proper understanding of those events – and it's considered canon, as it's written by Angel of Darkness writer, Murti Schofield. Tomb Raider: The Myth of El Hawa is an animation that describes what Lara had been up to, leading to the events of the sixth game (thanks, ). It has been directed by long-time fan and streamer, . The story is told via journal entries by Lara, which are narrated by Jonell Elliott, Lara's voice actor in the above mentioned games.
It turns out that the mysterious shaman from the Angel of Darkness deleted scenes, Putai, is canon after all. She took Lara in after she scrambled out of the tombs, and revived her with oils and water. She later took Lara to the Bantiwa tribe, which was mostly made up of women. There, Lara continued her recovery and even learned to fight like the tribe's skilled warriors, eventually becoming hesitant to leave her "desert family".
After a battle with a rival tribe, Lara managed to wound the enemy's leader, thus earning the tribal name of 'El Hawa', which translates to 'The Desert Wind'. Word soon spread of the mysterious El Hawa, protector of the Bantiwa tribe. Unfortunately, upon later returning to England, Lara learnt that the tribe that she left behind had been entirely slaughtered, and decided to go investigate. However, she gets a call from Von Croy, resulting in her taking a detour via Paris, kicking off the events of Tomb Raider: Angel of Darkness.
The animation is surely worth a watch if you're a fan of the series. It features brilliant artwork by Jasmine Steiner (Adayka) along with the voice of Lara herself.