I understand you are looking for advice on practice in order to achieve the CCNA Cloud Cerificatiion.
I would sugguest you review the Overview of the CCNA Cloud here: CCNA Cloud
Then as a guidance on what is needed to succesfully achieve your certification you should understand the topics of the exams:
For Study Material and Practice Exams you can check the following links:
Review this information and I am sure it will give you better guidance on the steps you need to follow in order to achieve your CCNA Cloud certification.
I wish you all the best in your CCNA Cloud journey.