Why is お風呂に入りたい。wrong, why does it have to be お風呂には入りたい。?
入る（はいる）is the kanji, so you need to use はいりたい instead of いりたい
Man I honestly thought it means the particle には man I am so stupid.
Of course it’s hairu, not iru facepalm sorry, I thought about the words 入口 and 気に入る and just without thinking I wrote いる.
Man and here I sat, thinking about why the particle には was supposed to be needed there, I am so dumb x’D