Also I would buy the Chromecast extension thingy if I wanted to, but I
don't really need to connect my phone to my tv that often lol, It was
just a funny thing I wanted to do.
I think it didn't work because soon later I realized my TV didn't
support Chromecast It's a Samsung 7 Series and I thought it supported
Chromecast, Thanks for the advice though, it could be useful for others!