Can't disable crossplay

Product: Apex Legends
Platform:Microsoft XBOX One
Please specify your platform model. Microsoft Xbox One
What is your gamertag/PSN ID/EA Account name? Z Dr. Spaceman Z
Please provide your squad mates' gamertag/PSN ID/EA Account name if possible.
Are you using any software with an overlay? No
Which Legend were you playing (if applicable)?
Which Legends were your squad mates using (if applicable)?
Where did the issue occur? In the lobby (waiting area before the match)
Which part of the map or menu were you in? If you don't remember the exact name, please describe the area or what you were trying to do in the menu. Menu Settings
What were you doing when the issue occurred? E.g. respawning a squad mate at a beacon, using an ability, a squad mate left the game. Menu
Did your squad mates also experience the issue? Yes
How many matches had you played in a row before the issue occurred? 20 plus
When did this happen? (dd.mm.yy hh:mm) Always
How often does the bug occur? Every time (100%)
How severe is your issue? Major impacts to gameplay
What happens when the bug occurs? I can't disable crossplay.
What should be happening instead? I should be able to disable crossplay
Steps: How can we find the bug ourselves? Go to the settings menu. Highlight disable crossplay and select.

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I can't disable crossplay.  I am tired of getting melted by mouse and key board pc players.  I am also tired of getting destroyed by PC player smurf accounts. In short, I am tired of playing with pc players.  I want to disable crossplay