When you are adding recipient the emoji, sticker and gif options is not available. It's default like this nothing like not working If you will try typing in enter message which is below your screen shot page you will be able to see all the options again And since you are a beginner for future reference if you post a query and someone solves it you can accept their solution so that the query is shown as solved in the community.
We acknowledge your query and apologize for the same. Please perform the below mentioned steps to resolve the issue:
* Check app cache: Clear cache memory of a particular application: Setting >Apps >Now pick the app. For example 'Samsung Internet' >Storage >Clear Cache.
For further assistance, register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback > Error report/Ask questions).
