and the game ended with Arsenal's defeat

As a Liverpool fan, I feel very happy with Arsenal's defeat.

I was very worried that they would win because if Liverpool lost in the next game then the title would be starting to not be a sure thing. But with Arsenal's defeat, I think that even if Liverpool lost in the next game, they would still be 8 points ahead and with a good chance of winning the Premier League.
Arsenal are not good enough to win Premier League this season and they even have been becoming worse than themselves in two previous seasons. In this season, Arsenal have played very inconsistently and they lost good performances and stability like two latest seasons when they competed for Premier League title with Manchester City very well.
This defeat is bad for Arsenal but I am not surprised and weeks ago, I believe that Arsenal only can compete for a second position in this season, but not for Premier League title.
Well, this is a good thing of course for Liverpool. That way, Liverpool can be calm in their top position when they see a team that is competing fiercely having to lose points. But even though I am not an Arsenal fan, I am quite disappointed with the result of this match. because I favor Arsenal in this match. And I'm sure many people lost in betting tonight because of course many people bet on Arsenal winning that match. But one red card seemed to really mess things up.
With 8 points difference more than Arsenal, and only 12 matches left, Liverpool have quite good chance to win Premier League title. If they can win like 8 to 9 more matches in last 12 matches, the Premier League title will very likely belong to Liverpool and if they win 10 matches the title belongs to them. Arsenal with their inconsistency will not be able to win all 12 matches and I believe that winning 8 to 9 matches will be enough for Liverpool to lift the league trophy in the end.