Just confirming the other posters: If you want to rid yourself of steam, you will have to rebuy everything and create a new account that is PC only. You will lose any progress and have to start over.

PS4 is an option, but I wouldn't really suggest it at this point. With PS4 aging, you'd probably want to wait for PS5 if you were going to do that.

Just curious, what is so bad about Steam that you want to purge yourself of it?

If you are so determined to get rid of Steam that you want to start over, the cheapest option would be to get the base game for free from Twitch Prime, buy Stormblood for $20, and then pre-order Shadowbringers.