I'm pretty sure most people have experienced the situation that you are playing but suddenly get kicked out of the server, and when you log back to FUT, no matter whether you were winning, drawing, or losing, the game is counted as DNF and you get a loss. It's not the case that your opponent is using no loss glitch, which counts nothing for you. It's the server that kicks you out, determines you as a early quit DNF, and gives you a loss. I only play 12-18 games in weekend league per week and I'm already experiencing one such game almost every week. So for people who play all 30 games, it must be almost inevitable.
So my question is: how do those pro Youtubers get 30 wins and top 100 every week? For example, several youtubers named "Hashtag" something always finish top 100 on at least one of the consoles, and they sounds like UK people, where no dedicated server exists? So how do these pro players avoid DC loss?