You can buy Cosmos with a credit or debit card on a crypto exchange like Coinbase or Coinmama. You’ll need to create a Cosmos wallet (an account) and get it approved before being able to buy.

You can find the list of coins you can buy through Ledger Live here. You can’t buy Cosmos directly through Ledger Live yet but you can manage & control it securely through the app.

Because Cosmos is on the internet, they are even easier to steal and much harder to return and trace. Cosmos itself is secure, but Cosmos are only as secure as the wallet storing them.
Like in any other investment, securing your Cosmos must be a priority. Your Cosmos are as secure as the wallet storing them. Ledger hardware wallets combined with Ledger live have been designed to help you secure your Cosmos and other cryptocurrencies.
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Yes, You can secure and manage your Cosmos with Ledger Hardware Wallets and Ledger Live application.
Learn more about Cosmos wallets