An even simpler auto-reconnect version of autostart based on above shell script (tested on rpi5 12.0.1 LibreELEC) to be added in /storage/.config/autostart.sh:
Bash
#!/bin/sh
(while :; do
ifconfig wlan0 | grep -q RUNNING || iwctl station wlan0 connect MY_SSID --passphrase=MY_SECURE_WIFI_PASSWORD
sleep 7
done) &