That's correct, you shouldn't import your seedphrase. That defeats the whole purpose of using a hardware wallet.
Here's a step-by-step guide from Trezor. It's a pretty straightforward process:
https://trezor.io/learn/a/metamask-and-trezorIf you want to access your tokens on other EVM chains or L2s that are stored in your Trezor, then all you have to do is switch the network like you normally do.
thank you, i read: "Download the latest version of MetaMask for Chrome or Firefox. If you have not used MetaMask before, you will be required to set up a wallet and generate a recovery seed. This recovery seed is separate and is not part of your Trezor and is not necessary if you only intend to use MetaMask with your Trezor."
Since i use metamask years ago, i don't have to set up a wallet?