She made her debut as a child actress in 2007 and has appeared regularly in German and international television series and film productions since 2013.
[1][2] When she was ten, a casting director at the Bundesjugendspiele became aware of her and she took on a small role alongside Anna Loos in the ZDF television film The Echo of Guilt.
[1] After graduating from high school, she completed a short yoga teacher training course in Goa, India, at the age of 18.
[4] Marei received her first leading role in 2017 in the ARD production Ellas Baby, directed by David Dietl.
In 2020, shooting began for the film The Salvation of the World as We Know It [de] by Til Schweiger, in which Marei played a leading role.