Can't connect my MacBook m1 to iPad mini5 14.4 for sidecar function

I would like to use sidecar function on my MacBook Pro m1, but it keep can't find my iPad mini5 as second display.

I search many post of google/ YouTube, I tried same wifi network, same apple account, but the problem still exist, don't know why I can't search my iPad mini5 as second display, I also tried switched to different wifi zone, but problem still exist.... very confuse

MacBook Pro is using 11.2 Bigsur

iPad mini5 is 14.4 os