I want to run a Wordpress site, where users can sign up and publish their own blog/journals. Its for a niche hobby, where each user can sign up, and start sharing their experiences and updates they do with their hobby.

My initial plan is to have a main front page feed with updates from all uses, but also a page for each user to group their posts. Also options to follow each user and intergration to ActivityPub.

How would you suggest I did this? Do I need any plug in, or would a vanilla installation work fine for it?