Environmental variables not detected

Hello! I am facing a problem trying to use environmental variables to set terraform variables with the prefix TF_VAR_

This is my .env


This is my _env.tf

variable "test"{
    type = string

This is my main.tf:

terraform {
  cloud {
    organization = "CarlosAlejandroGuerreroMartinez"

    workspaces {
      name = "pokemon-team-manager-github-actions"

This is the output:

(base) carloswarrior@Carloss-MacBook-Pro devops % source .env 
(base) carloswarrior@Carloss-MacBook-Pro devops % echo $TF_VAR_test
(base) carloswarrior@Carloss-MacBook-Pro devops % terraform plan 
Running plan in Terraform Cloud. Output will stream here. Pressing Ctrl-C
will stop streaming the logs, but will not stop the plan running remotely.

Preparing the remote plan...

To view this run in a browser, visit:

Waiting for the plan to start...

Terraform v1.6.3
on linux_amd64
Initializing plugins and modules...
│ Error: No value for required variable
│   on _env.tf line 10:
│   10: variable "test"{
│ The root module input variable "test" is not set, and has no default value.
│ Use a -var or -var-file command line argument to provide a value for this
│ variable.
Operation failed: failed running terraform plan (exit 1)


Note: You didn't use the -out option to save this plan, so Terraform can't guarantee to take exactly these actions if you run "terraform apply" now.