how do i keep junk mail from showing up in global inbox on iOS?

i am on iOS on iphone 14.

i am getting a lot of junk mail that is "starred" like *****Junk Mail*****.

it is showing up in my global inbox - where i have like seven different personal and business addresses.

how do i keep this from cluttering up my global inbox? i think in OSX it is hidden unless i go to the Junk Folder?

also any links to controlling junk mail? does this differ between gmail and URL hosted email and icloud?

THANKS