wireguard watchdog script

wg-watchdog.sh

#!/bin/bash

tries=0
while [[ $tries -lt 3 ]]
do
        if /bin/ping -c 1 10.200.200.1
        then
#               echo "wg working"
                logger -n winterfell -i -t "wg-watchdog" -p user.notice "wireguard working"
                exit 0
        fi
##      echo "wg fail"
        tries=$((tries+1))
done
#echo "restarting wg"
sudo systemctl restart wg-quick@wg0
logger -n winterfell -i -t "wg-watchdog" -p user.notice "wireguard restarted"

#crontab entry
#*/15 * * * * /home/mkasun/bin/wg-watchdog.sh

it's not working for me! (Linux 5.10.0-20-amd64)
the exit 0 at line 10 leef the while-do-down loop but not the srcipt.
if the ping fails or not the restart run everyon.

here is my script thats work for for me:

#!/bin/bash

if /bin/ping -c 1 xxx.xxx.xxx.xxx
then
exit 0
else
systemctl restart wg-quick@wg0
fi

crontab entry:
#Watchdog für Wireguard wg0 (VPN Tunnel)
*/5 * * * * root /opt/wg-watchdog.sh >/dev/null 2>&1
@reboot root sleep 10;/opt/wg-watchdog.sh >/dev/null 2>&1