@Felipe Arretz - Thanks for the question and using MS Q&A platform.
Unfortunately, there's no method to restore deleted resource groups. One thing you could do is create a new resource group and find the deployment template used to create resource in the deleted resource group. You can then use that template to recreate the resources.
For future reference, you should lock your resource groups with "CANNOT DELETE" lock to prevent accidental deletes. To know more details, refer to Lock your resources to protect your infrastructure.
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