Safari on iphone keeps pushing desktop instead of mobile sites?

My iPhone (safari) keeps redirecting me to the desktop version of youtube instead kf the mobile version. It's really annoying, please help.

Added (1). Also, i would just like to add, i know that there's a "mobile version" link in the bottom corner, but when i go to my bookmark, it goes straight back to the desktop version.

Try shutting safari off in the background, delete the bookmark and try going to the website again. If it works, then set that as your bookmark.