More than an ending, this is probably the author's thoughts in the form of a manga. Just saying tho.. This is actually a good manga and has many potential to go through as a rom-com. But, mangaka's problem is not only about storyboards, deadline and fans critique.
This is sad and tragic at the same time.
Sad because when FMC is spilling her guts out about not wanting to be a mangaka no more because they always get canceled.... you can tell with 100 percent certainty that this is the mangaka self reflecting their own feelings through the FMC...
And its tragic because many mangas like these that have a good potential; fail to live up to the magazine it's published in because of the low viewers/sales which will end up getting the Axe 🪓 in response.