Sample multiple PWM signals. This is a counterexample. Don't do this.

PWM_input_test.ino

const int CH_1_PIN = 9;
const int CH_2_PIN = 10;
const int CH_3_PIN = 11;

char buf [64];

void setup() {
  Serial.begin(9600);
}

void loop() {
  // sample PWM inputs
  int ch_1 = pulseIn(CH_1_PIN, HIGH, 25000); // right stick left-right
  int ch_2 = pulseIn(CH_2_PIN, HIGH, 25000); // right stick up-down
  int ch_3 = pulseIn(CH_3_PIN, HIGH, 25000); // left stick up-down
  
  sprintf(buf, "%3d %3d %3d", ch_1, ch_2, ch_3);
  Serial.println(buf);
  delay(5);
}