Is it okay to unplug my macbook air m1 half way and use it again?

Unplugging the charger while using the Mac will likely do no harm. You can also plug it in while using it without harm; if fact you sometimes need to do just that if the battery is low.

As a rule of thumb: If you are near an AC outlet, use it on AC power.

If you need portability, use it on battery power.

No other micromanaging of the charge process is ever required.

ellealejandrino wrote:

Is it okay to unplug my macbook air m1 half way and use it again?

You can use it whether it is plugged in or not, if that is what you are asking.