Most User Friendly Video Manager App?

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Hi All,

My UnRaid array stores thousands of video titles and it is setup with both a Linux Mint VM and a Windows10 VM.  I need advice on which Video Manager app meets my needs on either a Linux Mint or Win10 platform?  I need an app that will allow me to tag video titles to multiple custom categories of my choosing.  For example, I got a 60 minute training video called "Keto Dieting".  For this video I would like to assign tags to it such as "Diets", "Diabetes", "Cooking Recipes", "Health", and "Smoothies".  What is the best app that allows you to assign such categories to a video using the most user friendly approach and not some complicated approach that takes a lot of time?  In short, I want to spend the least amount of time possible assigning video titles to custom categories of my choosing.   Any advice welcome.