ACL policy creation

Hello Vault Community
I want to create an ACL policy that can control user access for example
I have the following path
/secret/Personal/userA
/secret/Personal/userB
I would like to create a policy that can be assign to both user A and B with
User A not able to access user B information vice versa
I am using the following ACL policy and it is giving me a permission denied when I log in with the user A account

path “Secret/data/Personal/{{identity.entity.name}}/*” {
capabilities = [“list”,“read”,“create”,“delete”,“update”]}

Does anyone know how to modify a policy so the userpass can be able to create directory under his own account
let say we have the following path
/secret/Personal/userA
I would the userA to be able to create directory under folder userA
Below is my policy for the USERA
path “Secret/data/Personal/{{identity.entity.name}}/*” {
capabilities = [“list”,“read”,“create”,“delete”,“update”]}
Warmest Regards
Matrix1510