multiple graphs on serial plotter
The part of your code that prints data to the serial looks like this:

void loop() {
    (...)
    Serial.print(sensorValue);
    Serial.print(“ ”)
    Serial.println(angle);
    (...)
    Serial.print(" ");
    Serial.println(led);
}


The bug is in the Serial.println(angle); line. The println method inserts a "newline" character at the end. Try changing it to Serial.print(angle); so there is only one "newline" character.

void loop() {
    (...)
    Serial.print(sensorValue);
    Serial.print(“ ”)
    Serial.print(angle);
    (...)
    Serial.print(" ");
    Serial.println(led);
}