I still don’t understand why Jang Gyuri felt t…

I still don’t understand why Jang Gyuri felt the need to go on Produce 48 after just getting in the final line up in Idol School and debuting in Fromis 9, I know that this might have not been her intention but it makes her seem ungrateful. She is saying this excuse of feeling like she’s lacking and is far behind from the other girls but she could have practiced more while still being in Fromis 9 and not joining Produce 48. I don’t see how this is helping her in any way. Which makes me wonder if she would feel the same if she does end up in the top 12 and debuting in this girl group with the others and want to join another survival show.