Unable to increase the number of users without having the workspace licenses/account

I am able to create only 9 active users using Cloud Identity and am unable to create additional users. How can I increase the user quota or create more users without purchasing Google Workspace licenses?

You should be able to allocate up to 50 free identity users. New accounts often have a reduced limit. Try reaching out to Workspace support and asking for the limit to be increased.

And how is it possible to start? Since when I trie to add the cloud identity it always ask for workspaces and there are no free tiers.
Have I to activate the workspace for a time to get startet with cloudidentity and then cancel the subscription to stay free?

You can start at the Cloud Identity page and follow the ‘Start Free’ link.