Would I be able to cancel snowflake after 30 day free trial

Hello.

It was mentioned in the document below.
According to the documentation, it seems that your account will be suspended when the free tier ends.
In order to continue using it, it seems that you need to register a credit card and switch to the paid version.
https://docs.snowflake.com/en/user-guide/admin-trial-account

The trial continues for 30 days (from the sign-up date) or until you’ve depleted your free usage balance, whichever occurs first. At any time during the trial, you can cancel the trial or convert the account to a paid account.

At the end of the trial, the account is suspended. You can still log into a suspended account, but you cannot use any features, such as running a virtual warehouse, loading data, or performing queries.

To reactivate a suspended trial account, you must enter a credit card, which converts it to a paid account.