Line Follower won't turn right

Projects Programming
2 
RedBotSensor IRSensor1 = RedBotSensor(A3); // right sensor

RedBotSensor IRSensor2 = RedBotSensor(A6); // center sensor

RedBotSensor IRSensor3 = RedBotSensor(A7);  //  left sensor

The names are stupid. If they were RightSensor, CenterSensor, and LeftSensor, the comments would be unnecessary.

int LINE = 925;// level to detect if the sensor is on the line or not

Threshold values should be named appropriately. That value will not change while the program is running, so it should be const.

Comments should precede the block of code that they go with, not follow it.

I really can't follow your program logic, because the comments are so weirdly placed.