How does the initial angle of a launched projectile affect the range of te landing position?

The greater the angle to the ground, the shorter the range (less horizontal velocity). In comparison to a release that has a smaller angle, resulting in a further range, (more horizontal velocity) Ideally, a 45-degree angle is the most optimal for maximising the distance for a projectile to travel. But there are other factors that affect the distance (air resistance, etc.)