How wallets work

A wallet does not hold coins the way a physical wallet holds cash. The blockchain holds balances. Your wallet holds keys that can sign transactions for an address.

A seed phrase (recovery phrase) can recreate those keys. Anyone who has it can move the funds. JC will never ask for a seed phrase, private key, or wallet password.

Software wallets run on a phone or browser. Hardware wallets keep keys on a dedicated device. Browser extensions can be convenient and also a larger attack surface.

Connecting a wallet to a site usually means the site can see your address and ask you to sign. Read every signature request. If you do not understand it, reject it.