Looking for a simple-to-use and clean interface IPTV app, that supports M3U and is ideally free or low-cost

I've asked this in a few related subs and got suggestions which I'll collate below in case it's useful for others, but I'm still looking to trial any other apps, especially if tested on Google TV.

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I have an m3u stream with publicly available free foreign channels my elderly relative wants to watch but they need an easy to use app with a basic select and play menu. Ideally free. My aim is to configure the app once with the stream playlist, and favourite the channels he'll likely watch. Then he just opens the app and selects from the 5 or 6 favourited channels without too many menu options.

Apps I've tried so far:

• ❌Tivimate - good but favourites and search are paid features
• ❌ Ibo Player Pro - paid
• ❌IPTV Smarters Pro - didn't load the m3u playlist (all other apps did)
• ✔️Televizo - so far the best one. Loads playlist and can search/favourite

App still to test:

• Ott navigator
• qpTV

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So if you have your own recommendations, can you share with the class :)