Why are all the edges of game objects jagged with pixels?

I made a 3D model of a rifle in cheetah 3D and imported it into unity. The quality of it is absolute garbage with stair like pixelated edges when I put any object at an angle. Every Game object in unity is like this and it has made me very frustrated. Even the cubes you place within unity have jagged pixelated edges. This looks nothing like the games people play on consoles and is very displeasing to look at. How can I fix this? Can I fix this?

I’m assuming you mean Anti-aliasing, which is available through Unity’s quality settings. Generally, the editor’s scene view will not antialias what it sees because there’s not really any point. It would just overwork the video card for no reason.

Instead, anti-aliasing is limited to the game view, since that’s where it’s intended to be appreciated.

Edit: What is aliasing?