If somebody is interested I explain how I fix it for now, but I hope for an update inside android PIE I guess that doesn't force me to do like I did and like I'm going to explain:
My modem has 2 wifi (channels I guess) 2,4 GHz and 5 GHz
All my other devices use 2,4  and I keep for this channel: WPA-PSK TKIP-AES 256 BIT  encryption
In the 5 GHz channel, I change the encryption to WPA-PSK TKIP 256 BIT so now my Xiaomi MI A2 lite is connected to the WI-FI