To store your XTZ cryptocurrency by Tezos and make all possible transactions, it is necessary to have a wallet - to be more precise, a crypto wallet. In our modern age, there are plenty of options. You can either choose to store your digital assets in hot wallets, like Trust Wallet, or give your preference to cold wallets - for instance, Ledger Wallet.
Most crypto users choose the first option because it is free and extremely convenient for their use.