Twitch
The biggest live streaming service at the moment is Twitch. On twitch you can watch any type of content you want. they have everything from gaming to art to IRL live streams.
You can also get a paid subscribtion to your favorite streamer to get access to cool stickers.
Youtube
Youtube is the biggest video streaming website in the world right now. With over 50 million content creators about 300 hours of video are uploaded every minute.
It has every kind of content imaginable and even has different platforms for gaming and children.
Mixer
Eventhough the streaming service Mixer is not as big as Youtube and Twitch it still has a very solid app and browser website. It also has some very good content creators
who make Mixer a very good streaming service.