Access AWS secret manager secret from outside AWS ecosystem/environment

Hi, I would like to know if it is possible to access a secret that I have configured in the secret manager from outside the AWS ecosystem, let's say locally or on a server that is outside.

I have given a policy to a group where I have created a user.

I am using .net 8.0 and this is a code that I am using it is a snippet code provided by aws.

 string secretName = "****";
 string region = "****";

 IAmazonSecretsManager client = new AmazonSecretsManagerClient(RegionEndpoint.GetBySystemName(region));

 GetSecretValueRequest request = new GetSecretValueRequest
 {
     SecretId = secretName
 };

 GetSecretValueResponse response;

 try
 {
     response = await client.GetSecretValueAsync(request);
 }
 catch (Exception e)
 {
     throw e;
 }

 string secret = response.SecretString;

It is failing with the following error:

"Unable to get IAM security credentials from EC2 Instance Metadata Service"

Thanks