In the midst of Manchester United situation of losing confidence but being required to start again next week against Southampton. It seems that a club like Southampton can also make Manchester United unable to score goals easily. For me, clubs at the lower level of the standings can sometimes be better than Manchester United's performance this season. Even if Manchester United gets 3 points, it doesn't seem too surprising, don't be surprised if Southampton is able to dominate the game 
I had no option than to laugh out after reading your post. In fact, whatever you have to say Manchester United deserves it. Although in football everything is possible. But I do not see the possibility of Southampton dominating Manchester United in their next meeting. Manchester United team is not that bad, if not for the kind of obvious mistakes made by casemiro, Liverpool wouldn't have beaten Manchester united shamefully. I have watched Southampton this season and they have nothing to offer than to go back to relegation. So if by mistake a relegation club beats Manchester United, just know that it is over for the club and it will be the end of Erik Ten Hang. I am so optimistic that Manchester United will beat Southampton and claim the full three points in their next meeting. There's no fear or doubt about this.