I would recommend to run Cluster Validation against the cluster. Validation will go through important things needed for the cluster and gather all information into a report, which will show if there are some issues.
In addition, check Failover Cluster best practices and compare them with configuration you have. https://learn.microsoft.com/en-us/windows-server/failover-clustering/create-failover-cluster
The following video might help as well:
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