Now Manchester United must focus on the Europa League competition because that is the only way for them to get a ticket to the Champion League next season, namely by winning the Europa League this season after Manchester United was very far behind to finish in the top 4 of the Premier League standings.
And regarding Manchester United's chances of winning the Europa League title this season, I think it is still quite large, especially since the competition in the Europa League is quite equal so that no one is favored excessively.
Manchester United can not do anything to climb in Premier League so that they are eligible for a slot to UEFA Europa League next season. Playing in Europa League this season and win its title is the only way for them to be eligible for Champions League next season. If they fail to win this title, they will not appear in Europa League or Champions League next season and perhaps won't appear in Conference League too.
Five more matches in Europa League are everything left for them to fight and win to take the trophy and that special gift to Champions League. Their chance in Europa League, I think it's not too big, not too small. But by saying so, I think they can try because chance for them is acceptable and good enough.