After installing the free version of local confluent platform and opening control center.
As per below doc, Iam in step3, and want to generate mock data through the Datagen Source Connector to the testing topics that I just create , but I can see datagen source in control Center, try to download plugin and add it manually, with no luck, please advise
hey @Mhussein27
welcome 
out of curiosity
did you use the following compose:
wget https://raw.githubusercontent.com/confluentinc/cp-all-in-one/7.7.0-post/cp-all-in-one-kraft/docker-compose.yml
and dd you check the logs of the connect container?
best,
michael