why

It's requirement for me

as i know you cant

Honestly, wouldn't recommend it, but since you really want to, the only way i can think of is using:
https://nextjs.org/docs/app/api-reference/functions/use-router#router-events

Inside that useEffect you can check for page url changes and then negate the effect, maybe using something like router.replace ()

In my case if the user once logged in after can't back the login page again.

show at login page, "you already logged in"

Then you shouldn't be "preventing browser back and forward buttons"

Use a middleware to do the checking and redirecting instead.

Dont try to negate/disable it outright.

https://nextjs.org/docs/app/building-your-application/routing/middleware