Movie about a male ballet dancer going insane

[LilCerberus]

Trying to remember a movie about a late 19th century/ early twentieth century male ballet dancer's decent into madness....
He has a controlling older brother who manages his career....
A few scenes I recall, one point he tries to stand up to his older brother, but gets smacked...
Another, he tries to choreograph his own work involving a man playing tennis against two women, but it gets bad reviews....
He tries again involving something to do with a native American massacre, the crowd boos uncontrollably, & they show him losing it back stage....,
It ends with him sitting in the dark in a straight jacket.....

[LilCerberus]

Nevermind

It was Nijinsky(1980)