Regarding Gazebo

Well i have download gazebo using the documentation on Gazebo site , the jetty version on Ubuntu 26.04 and i also have ros2 but whenever i launch it there is problem with gz-rendering ......as per internet i downloaded deleted merge install like 5 -6 times still it doesnt solve it and there is no solution i can find ...i found it when i ran the nao joint one even simple things like shapes.sdf isnt rerndering and showing a screen white with nothing in it