BuddyPress.org

Sorry I misinterpreted the initial question, so you have 2 questions
1. Upon logging in you’d like to redirect the user to his profile activity page.
2. How to disable the wp-login for non-admins or something like that so that regular users never see wp’s login screen.

2. https://wordpress.stackexchange.com/questions/62889/disable-or-redirect-wp-login-php would this be a good start to a solution

1.https://buddypress.org/support/topic/login-redirect-to-activity-personal-page/ ?