Hiya, Kia, and welcome to BYC!
Sorry about the loss of your rooster.
Cockerels are very unpredictable and sometimes can seem outright mean, until adulthood, and even then, sometimes some are just not going to be what we want. I read an excellent article here written by one of our members. It's lengthy but so insightful and informative. If you have time, I'd give it a read. Understanding Your Rooster, by @Shadrach
We're glad you're here!

Sorry about the loss of your rooster.

Cockerels are very unpredictable and sometimes can seem outright mean, until adulthood, and even then, sometimes some are just not going to be what we want. I read an excellent article here written by one of our members. It's lengthy but so insightful and informative. If you have time, I'd give it a read. Understanding Your Rooster, by @Shadrach
We're glad you're here!