Forum içerisinde gezerken bunları buldum bakmanı tavsiye ederim

https://wordpress.org/plugins/frontier-post/
https://wmaraci.com/forum/wordpress-sorunlari/wordpress-ozel-yazi-gonderme-sayfasi-101380.html

https://wordpress.org/plugins/user-submitted-posts/
https://wordpress.org/plugins/wp-user-frontend/
https://wmaraci.com/forum/wordpress/wordpress-uyeler-yazi-ekleyebilsin-186170.html