Check for debris around the analog stick
Blow compressed air around the stick base
Move the stick in circles while cleaning
Clean the stick base with isopropyl alcohol
Recalibrate the controller in Xbox settings if available
Update the controller firmware
Replace the batteries or fully charge the controller
Test the controller on another device
Adjust deadzone settings in-game
Reset the controller connection to the console or PC
Open the controller and clean the potentiometers
Replace the analog stick module
Use a controller repair service
Replace the controller if the drift cannot be fixed