Clicking when reversing

I need your ideas for a sound that I started to hear especially in the morning when I was leaving the parking lot. When you turn right or left, you hear a knock and knock sound from the front bottom.

(therefore, the steering wheel vibrates very little)

(not when turning the steering wheel, but when turning the steering wheel and backing up)

I couldn't tell if it was from the inner-outer axle or the hub ball.

I looked at the bellows etc under the vehicle, they are all intact.

this sound that confuses me is especially in the cold in the morning. there is no sound during the day.

what are your opinions and comments on this subject. Thanks in advance.