just that i cant found any 8 bit latched module in the market of my country
Then you are stuffed as you don’t seem to want to make anything with components. For this simple problem no other system is better than the Arduino.
If you can’t find a relay board how on Earth are you going to find something much more scares with a built in relay. I still don’t understand what is wrong with buying one from another country and having it delivered to you.
By latched do you mean a relay that retains its state when the power is removed?