I have never been given emblems of any season

Good morning my problem is that they have never given me an emblem of any season and I have always come to onyx

Ranked Emblems were exclusive rewards for season 0. They are no longer available and most likely never will.

They changed the system awhile ago on how to claim rewards including season rewards.
Please always use this link to claim your rewards. https://gearsofwar.com/en-us/my-rewards