Debut or Die
https://www.mangago.me/read-manga/muse_on_fame/ if you're good with bittersweet stories
Try these:
https://www.mangago.me/read-manga/act_age/ (Got Axed but u have to read this GEM)
https://www.mangago.me/read-manga/debut_or_die/
https://www.mangago.me/read-manga/rookie_but_one_in_a_million_actor/
https://www.mangago.me/read-manga/the_thousand_faces_actor/
https://www.mangago.me/read-manga/the_second_life_of_an_all_rounder_idol/
https://www.mangago.me/read-manga/superstar_from_age_0/
https://www.mangago.me/read-manga/top_star_sent_by_god/
https://www.mangago.me/read-manga/face_genius_0_year_old_top_star/
I'd prefer full color, romance is okay but no yaoi/smut, and decent art. I'm okay with pointy chins, but if the only way to tell people apart is by hair color, i'm out. I've already read the following
A Tidal Wave of Glory
From Acting Genius to Top Idol!
The Rogue Producer Survives as an Idol
The Otherworldly Genius Method Actor
Be the Actor