it isn't in your wallet. there are no bitcoins.

your wallet is a signing device

the seed words are used to generate a big number which is used to derive the the addresses paired with private keys.

your UTXO collection is the list of transactions addressed to you. the sum of amounts of those UTXOs is your sat balance.

the UTXO record is derived from the blockchain. That's where your TX data is stored.

get a new hardware wallet if you want, but all you need is the words.