Solana web3 : create addresses owned by my main account

Hello, I’m developping a game plateform and I need create adresses and accounts owned by my main account, like :

const mySecondWalletOwnedbyMe = createWalletFromOwner(my_MAIN_Wallet);

Am I in right way or I I mix things up ?

I detailed my problem in

Can someone help me, where I should go :wink:
Thanks, have a nice day.

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