no you just change your matrix configuration (homeserver.yaml) to accept guests.
# Allows users to register as guests without a password/email/etc, and
# participate in rooms hosted on this server which have been made
# accessible to anonymous users.
And than you create a public room that guests can enter.
hmm it looks like you need your own element client that defaults to your homeserver.
- published: 8888
- type: bind
but i don't allow registering users yet, because i don't know how long i can keep it running.
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