Entertainment circle BL is my guilty pleasure, but I feel like lots of BL don't go all out with the entertainment aspect. Some of my favorites that actually do entertainment well include: The Idol Group and the Crown, How to Say I Love You, Rebirth into Interstellar Marriage, Recapture the Entertainment Industry, and Reborn as the Villain President's Lover, My Husband is Suffering from a Terminal Illness, and Superstar Aspirations. For acting BL, I like it when the character roles are interesting, there's meta commentary from fans, and the results of the movie/TV show are actually discussed. I'm looking for untranslated recommendations to MTL, since I've read pretty much every entertainment circle translated novel. No mpreg please!
One of my most favorite entertainment circle/acting bl novels is Great at Acting, Now I'm Reborn. MTL seems easy enough to read too.
I have one but its not really that much of entertainment though, you can check this one if you want. 国民男神重生记 Author:风华如故
You may want to try this. https://forum.novelupdates.com/threads/bl-transmigrate-mc-omega-entertainment.111086/#post-5805171 For translated ones, you may also want to check out: Rebirth of supermodel The Film Emperor Asks for Divorce Every Day Superstar, no big deal? I Just Want to Be in a Relationship Rebirth of a movie star True Star - Slow update and Harem