Try these two lists maybe it's there
https://www.mangago.me/home/mangalist/2492422/
https://www.mangago.me/tag/Gangster+omega/
I couldn't find it but thank you tho!!!( T∀T)
This is my last attempt but do please try this one!(I'm sorry if you didn't find it)
https://www.mangago.me/home/mangalist/1531580/
Is it this one,Am not sure tho
Did the Nerd Manage to Flirt with the Cutie Today?
This was extremely popular on bilibli few years ago. Omegaverse highschool. Mc was a very beautiful omega who switched schools recently but was secretly a gangster and the reason why he transfered so much was he kept beating up people especially who like harassed him for being omega fighter. I dont remember much about the ml except that he was popular?
I remenber the title was the word 'cute' something on it, honestly not too sure.