Yes, you can install the Bitnami Redis Stack in the same server or use a separate server with Redis so you can connect WordPress with that server
Bitnami packages and configures already existing applications. We can only offer support and help on basic and most frequent application configurations. Always based on the default configuration or on our guides.
If the question is related to the application itself, probably someone with more experience and knowledge about that specific tool can help you better than we can. We suggest you to post your question on the official support forums of the application so others can help you with your issue.
Do not hesitate to ask us any questions about our solutions