Drone have tendency to fly upwards

Hi all. I am using F450 with pix2.4.8 and i’m using Qgroundcontrol. My drone have the tendency to fly upwards even when my RC stick is at hover position. What should I adjust?

Thanks in advance!

Please redo your radio transmitter calibration and make sure you don’t have any trim set in the throttle channel. Can you also share your flight log?

Not enough information. What Flight Mode were you in?

Have you followed these instructions https://ardupilot.org/copter/docs/tuning-process-instructions.html already ?