Nice

try these:

https://www.mangago.me/read-manga/debut_or_die/
https://www.mangago.me/read-manga/i_became_the_youngest_top_idol/
https://www.mangago.me/read-manga/my_second_life_as_an_idol/
https://www.mangago.me/read-manga/the_second_life_of_an_all_rounder_idol/

I did a list, though not all of them are isekai-esque. But for now most of them are.

https://www.mangago.me/home/mangalist/2840474/

I have a list for you ^^
https://www.mangago.me/home/mangalist/2272803/

Thank you.