Hi Jellew,
I agreed with what Bipin said and then I tested successfully.
You could follow my steps below to try it out:
1. Create a flow, for ease of testing I chose "Manually trigger a flow" as the trigger. If you have special needs you can choose another one.

2. Create a new step “List rows”, choose an entity. Use “Filter rows” to filter a specific account.

You can find GUID at this account’s URL

3. Select an option “Create HTML table” to view the results. You can choose how you want to view the results according to your own needs.
Value: @{outputs('List_rows')?['body/value']}
Owner: @{item()?['_ownerid_value@OData.Community.Display.V1.FormattedValue']}
Regarding: @{item()?['_regardingobjectid_value@OData.Community.Display.V1.FormattedValue']}
ActivityType: @{item()?['activitytypecode’]}
Subject: @{item()?['activitytypecode’]}

4. Select “Test” in the upper-right corner to test the functionality.

