If Jinn Can Witness the Unseen, Why Are They Tested Like Us?

Assalamu Alaikum everyone, I’ve been pondering something about jinn and humans and I’m a bit stuck on this question. From what I know, we humans can’t see the unseen, but jinn are part of that hidden world and can see things we can’t (like they see us while we don’t see them). So, both humans and jinn are being tested in this dunya, but doesn’t their very existence prove the Quran is true? Then why, just like us, do they split into different faiths and beliefs? And can’t they see the angels too? I remember reading in the Quran that jinn tried to reach the sky and eavesdrop on angels talking-doesn’t that give them clear evidence of the truth? I’d really appreciate a detailed answer with examples, I’m not very knowledgeable so forgive me. JazakAllah khair.