This guide will help you easily link your Origin account to your Steam one so you can finally delete Origin.
How to Link Your Origin Account to Apex Legends on Steam
Launch The Game
Once you launch a game, you’ll find the following screen.
Click on Register.
Enter your account details (the one to link)
Once you click on Register, you’ll be prompted to enter your account details.
Note: Make sure you enter the correct account to be linked or else the process of unlinking will be nuts.
After you enter your details and SIGN IN, your account will be linked and you can finally play the game.
Now you can finally uninstall Origin for good.