best and worst free streaming TV providers

I just started watching "The Ref" on Freebie TV which I am unfamiliar with.

The first several minutes of the movie included a small picture-in-picture in the top left corner. I think it was advertising but I ignored it so who know.

At the four minute mark, the streaming froze.

Anyone more knowledgable about the p-i-p content? Is it advertising?

And of course, last time I watched movie on Pluto (or was it Tubi?) it included intrusive commercial breaks every 10 minutes, often in the middle of a scene.

Which free streaming providers do a better job?

ETA: From the responses, it seems that Pluto was the channel I watched. And people feel that Tubi is a less intrusive, more enjoyable provider. Thanks for the info, everyone!