how to watch youtube or play youtube videos in apple watch

how to watch youtube or play youtube videos in apple watch.

Can a browser be installed in watch and use browser to open youtube and play videos. ?

Do app store has any third party app that supports video playing from youtube. ? I tried

I tried sending my videos in imessage and play it in watch. that works perfectly .. But am only looking to play youtube videos in apple watch ? How and what is the way to do so ?