I would like all site visitors to be able to add topics without being forced to register an account. Is there a solution for that?
Configure posting from email and users can create topics by email without registering. This is the only way to do this without installing a plugin.
Allowing users to post without registering an account can easily lead to flooding your forum with spam messages, and is generally not recommended for anyone to do this.
إعجابَين (2)
Hi @islamafify4000 
Welcome to Meta. 
In addition to @Lhc_fl’s reply, as alternatives to explicit un-registered posting, there are also these options, depending on what your needs are:
إعجابَين (2)
Thank you I will try