PUBG does not officially provide exchange systems in game.
Therefore, migrating items from one account to another is not supported.
However, you can always trade with other players on the 'Steam Market'.
'Steam Market' is a place where you can trade items for Steam platform games.
In order to access the 'Steam Market', you need to setup the Steam Mobile authenticator.
Please keep in mind, you might not be able to access the market due to the status of your Steam account.