Browsertrix-crawler behaviors

Hi, we would like to use Browsertrix-crawler to archive TikTok, Instagram and Twitter pages.
Can we do this with a terminal command by adding the flag “–behaviors siteSpecific”? Is it necessary to have a list of seed urls (–seedFile tag) to be exhaustive? When I’m logged in to e.g. Twitter in Chrome browser, it seems Browsertrix is not logged in when archiving the page. How can I change this in some way? Many thanks for your response!