Was this a folder in OneDrive?
Is this a personal account or a work/school account?
If it is personal account, unfortunately the files cannot be recovered at this point. It is within product design intention.
If this is a work/school account, it might be recoverable, depending on each organization's retention policy. Reach out to your organization's IT support team, they would know what the retention policy is for your organization and can recover for you if it is still within the defined retention period.