Azure DevOps repo not showing Pull Requests on web browser

[luckyteckani]

I was going through the documentation for configuring pull requests to allow moving commits from DEV to Main branch but for some reason it doesn't show in my repo.

Below is what is supposed to be visible to users  as per MS documentation-

Below is what I see on my repo -

Am I missing a step here or is there a problem with my Azure DevOps login?

[#2]

@luckyteckani 

First screen shot shows that Repository is created on GIT and second screen shot repository is created on TFS, hence the difference. There are some differences due repositories being from TFS and GIT