Im trying to save the output from if else statement into an variable, but its not working

So the script is just saying, that the server is offline, but when i look with "screen -ls", the server is online.

if screen -list | grep -q "Proxy"; then
    proxy=$0
fi

if screen -list | grep -q "Lobby"; then
    lobby=$1
fi

if screen -list | grep -q "CB1"; then
    cb1=$2
fi

if [ $0 = 0 ]; then
    echo "Proxy online"
   else
    echo "Proxy offline"
fi

if [ var=$1 = 1 ]; then
    echo "Lobby online"
   else
    echo "Lobby offline"
fi