Role-Based routing on my Next.js application

Hey community.
I’m trying to have different routes for admins and users on my Next.js app.
I have two main routes. /admin/* and /dashboard/*. I have some Rules on my Auth0 application that adds the user role to its claims.
Now on my application, I want to limit users. So the normal users can’t access admin routes.

I don’t want use useUser hook on the client-side and do the redirect if their role is not Admin. I want to do in a more cleaner way so users don’t see a glimpse of admins pages and then get redirected to other routes. I want to do it on the server-side.
I thought maybe using middlewares could be a good option for me. But I wasn’t successfule.
Here’s the simple code on my middleware.

export default withMiddlewareAuthRequired(async function middleware(req) {
    const res = NextResponse.next();
    const { user } = await getSession(req, res) as Session;
    const userRoles = getUserRoles(user as UserProfile)
    const requestedPath = req.nextUrl.pathname

    if(requestedPath.includes("admin") && userRoles.includes(UserRoles.ADMIN)){
        return res
    } else {
        NextResponse.redirect(new URL("/dashboard", req.url))
    }
});

export const config = {
    matcher: ['/admin/:path*', '/dashboard/:path*'],
}

Do you have any idea why it’s not working? Or even do you have a better way to achieve it?