Unexpected Bill, learning.

Hello Lucas,

First thing first, please delete the resources that you have used so far, so it won't incur more charges.

Second, Open Support Services and open Ticket with support under Account & Billing and Submit a request to them for help and explain your situation.

If you open new account you have 1 year free tier for resources and you can review them from here: https://aws.amazon.com/free/

it is always recommended to check out its pricing page or use the Pricing Calculator. https://calculator.aws before you start using the new services.

You can Request Wave Off AWS Bill in Free Trial.

refer : https://patelsandeep88.medium.com/requesting-wave-off-aws-bill-in-free-trial-3aeb465cb5b7