You can get another set of 50 fresh addresses anytime by creating new hidden wallet.
In order to create new wallet you have to enable passphrase feature in Trezor Suite setting (however this feature should be enabled by default).
So after exporting your public keys:
You will be prompted to enter a passphrase:
Once the passphrase feature is activated on the device, you can provide any input of your choosing and it will be used to generate a completely new wallet and each wallet will offer you another set of 50 addresses to export.
To access this hidden wallet repeatedly, you will have to use the exact same passphrase in combination with the recovery seed on the device.
Note that mistyping the passphrase will generate a completely new wallet. There is no such thing as an “incorrect passphrase”, so whatever you provide as your input will be used in the process of deriving a wallet.