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You would need to setup an Azure Automation runbook, on a schedule to delete your resources,.
Jack Tracey - has published a script: https://github.com/jtracey93/PublicScripts/tree/master/Azure/PowerShell/Enterprise-scale
This script will remove everything under a management group and everything in the subscriptions, it can also remove SPNs and reset Cloud for Defender pricing back to Free.
Its a nuclear option - but very useful in sandbox environments.
THIS SCRIPT WILL REMOVE EVERYTHING IN A MANAGEMENT GROUP - so please be careful - and TEST it in a non-production environment.