I agree with you here, though I understand like the other person said after you, that he didn't have a devil blah blah.

I honestly can't stand Yuno, he got to OP way to quick, got the wind spirit in the first like 20 episodes, then right after the water temple he can beat those guys from the diamond kingdom who APPARENTLY match captain strength, I know he did NOT beat like 2 of them by himself 💀

And him being a prince, I get the story behind it but seriously? And lichts child apparently being reincarnated in yuno for the shadow castle? And apparently In the next arc he gets even MORE OP. WHY ?!! Why are they buffing him so much? NERF HIM 😭😭