Terraform script organization

[NourMawla98]

I have a terraform script. The hierarchy is as follows:

/root
├─main.tf
├─variables.tf
└─provider.tf

The script is as follows:

Step 1: Define Resource Group

resource "azurerm_resource_group" "rg" {
location = var.zone
name = var.rg-name
}

Step 2: Create database

resource "azurerm_mysql_flexible_server" "mysql" {
resource_group_name = azurerm_resource_group.rg.name

....

}

resource "azurerm_mysql_flexible_server_firewall_rule" "allow-all-ips" {

....

}

Steps 3, 4.....

as you can tell, the script is becoming too large and very difficult to maintain and handle

How can I use 1 provider.tf, 1 variables.tf and 1 main.tf to organize all these resources. Please not that some resources depends on the output of others

Any advice will be much appreciated