I have no access to my old TRN acc that i have linked my Val profile

I have no access to my old tracker.gg acc that i have linked to my valorant profile. Is there any way to unlink my old tracker acc and link my new tracker.gg acc to my existing valorant profile ?

Log into your valorant profile here: https://account.riotgames.com/ and remove tracker network from connected accounts. Afterwards you should be able to link your valorant profile to your new trn account