Well, that's very hard to find.
But why don't you use Google? i think it offers unlimited free hosting, as long as the use isn't too excessive
Also Amazon, but i think that after the year you should pay.
I heard a lot about telegram, it would be who would replace WhatsApp, what i didn't know is that in this way they sold things like these "travel accounts" and others. Very interesting this business in telegram..
Like Twich, you can do the same in Mixer or any other.
But, i think it is necessary to use a camera and your voice, because if you want to enter the competition and people are interested in you, you need to see it and listen to it so you can socialize more pleasantly with you. ;)