terraform - delete s3 bucket (tfs-state-bucket): access denied - terraform

Question

Friends,
I am learning terraform and got stuck with this issue: I can create all the resources listed bellow without problems but when I run terraform destroy to delete them, Terraform returns a permission denied error while trying to destroy the s3 bucket (where .tfstate was being saved):
Error: deleting S3 Bucket (tfur-state-bucket): AccessDenied: Access Denied
It's also worth mentioning, that the IAM user of terraform has already administrator permissions. I am trying to delete the resources like this:
I (1) delete the backend resource from main.tf,(2) run terraform init -migrate-state and (3) finally run terraform destroy.
The version of Terraform I am running:
Terraform v1.3.2
darwin_arm64
Any idea about what I may have been missing? Here is my code:
terraform {
required_providers {
aws = {
source = "hashicorp/aws"
}
}
}
provider "aws" {
region = "us-east-1"
shared_credentials_files = ["~/.aws/credentials"]
profile = "vscode"
}
resource "aws_s3_bucket" "tf_state" {
bucket = "tfur-state-bucket"
#lifecycle {
# prevent_destroy = true
#}
}
resource "aws_s3_bucket_versioning" "bucket_versioning" {
bucket = aws_s3_bucket.tf_state.id
versioning_configuration {
status = "Enabled"
}
}
resource "aws_s3_bucket_server_side_encryption_configuration" "encryption_for_tf_state" {
bucket = aws_s3_bucket.tf_state.bucket
rule {
apply_server_side_encryption_by_default {
sse_algorithm = "AES256"
}
}
}
resource "aws_s3_bucket_public_access_block" "public_access" {
bucket = aws_s3_bucket.tf_state.id
block_public_acls = true
block_public_policy = true
ignore_public_acls = true
restrict_public_buckets = true
}
resource "aws_dynamodb_table" "terraform_locks" {
name = "terraform-locks"
billing_mode = "PAY_PER_REQUEST"
hash_key = "LockID"
attribute {
name = "LockID"
type = "S"
}
}
terraform {
backend "s3" {
bucket = "tfur-state-bucket"
key = "global/s3/terraform.tfstate"
region = "us-east-1"
dynamodb_table = "terraform-locks"
encrypt = true
}
}