I cant connect My jjrc x11 to my phone xiaomi mi 9 lite. I cant see th

Hi,

See the specs of your devices:

RC Quadcopter:

Item Name: RC Selfie Drone

Model: X11

Control Method: APP / Remote Controller

Remote Control: 2.4G

WIFI Transmission: 5G

Your phone:

• 3G Support
• Yes
• 4G Support
• Yes
• 2G Network Bands
• GSM 850 MHz (B5), GSM 900 MHz (B8), GSM 1800 MHz (B3), GSM 1900 MHz (B2)
• 3G Network Bands
• W-CDMA 850 MHz (B5), W-CDMA 900 MHz (B8), W-CDMA 1700 MHz (B4), W-CDMA 1900 MHz (B2), W-CDMA 2100 MHz (B1)
• 4G Network Bands
• LTE-FDD 700 MHz (B28), LTE-FDD 800 MHz (B20), LTE-FDD 850 MHz (B5), LTE-FDD 900 MHz (B8), LTE-FDD 1700 MHz (B4), LTE-FDD 1800 MHz (B3), LTE-FDD 1900 MHz (B2), LTE-FDD 2100 MHz (B1), LTE-FDD 2600 MHz (B7), LTE-TDD 2300 MHz (B40), LTE-TDD 2600 MHz (B38)

Your mobile phone is not supporting 5GHz connection.