@ivaannom
Zoro’s primary frustration is with Luffy allowing Vegapunk to die, not with him being sad about it
みっともねェな (mittomonē na) -> Zoro views the situation as "disgraceful", "shameful" or "embarrassing"
あの野郎 (ano yarō) -> Zoro calls Luffy "that bastard", yarō has a negative connotation, which further implies he is disappointed and frustrated with Luffy, this shame is tied to Luffy’s failure to act appropriately as a Yonko, rather than Luffy’s emotional response to the situation
死なせた (shinaseta) means "allowed to die" or "caused to die"
Zoro is angry because, as a Yonko, Luffy should have the power and responsibility to prevent such deaths, and failing to do so reflects poorly on him.
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