Hi, I don't think you can do ALL, but definitelly you can do several. In your flow you just need to select action for parallel branch. Result would look something like this:
In case you need to refresh ALL datasets in your workspace / tenant - best is to use REST API. It is a bit more advanced since you need to write your own code, but with some youtube channels it is not that difficult.
If my answer was helpful please give me a Kudos or even accept as a Solution.