How to use session in every page?

I'm set the session value in API Controller, and direct another page in js. When I try to check the session value in middleware, but I can't get the any value. Here's the way that I set and get the session value.

set value in API Controller: session(['user' => $acct['name']]);

get value in middleware: Log::debug ('my session value: ' . json_encode(session()->all()));

// my log output: my session value: {"_token":"ztN5C2VB2P6otGPxKOPM2z4GSvN2nUBxqqIo9idt"}

all process: login page -> api to check account -> redirect to user page (before loading this page, I set the middleware to check user is login or not. this is the part that I can't get session value)