2D Unity Background Problem

While developing our game, my team has encountered a problem. When we imported our AI background to Unity, it became hard to see and pixelated. The level itself is a long level from left to right. It was all made in Illustrator and it looked normal until it was imported to Unity. Does anyone know a way to make it clearer?

What are your import settings for that sprite? Also make sure you’re exporting at the correct resolution for such a large image.