How to Change EA Account name in my PS5

Hello there.

I have linked my PSN ID with an ea account.

When I login through my ps5 to play Apex Legends shows my PSN ID Name but when I login through Pc shows a different ID Name.

So my question is how I can change my Game name In ps5, if I change my EA account id will it be changed in PS5 Apex Legends??

Thank you

Kind Regards