I am still optimistic that in a situation as complicated as this Madrid should be able to win 3 points over Celta Vigo. Although the stakes are the players fatigue. After all this has happened more than once, so Madrid's players are professional and used to a tight schedule. It is not too worrying because Ancelotti also realizes that this 3 point opportunity must be utilized well so that the gap from Barcelona remains small. Or maybe Ancelotti gives Arda Guler and Endrick to appear in the starting eleven. Mbappe and Rodrygo can handle the front line and hope Vini will not miss the match against Celta Vigo.
I won't be surprised seeing Madrid dropping points at this critical moment because it is really frustrating playing without a large number of key players in the team, besides most of the players would be returning back from international duties and would feel very exhausted and may not be able to give their 100% as a result of fatigue, but we all know this club and what they are capable of doing on the pitch despite the injury crisis rocking the team, they have a very good antecedents and I think coach Ancelotti would have to improvise a bit at least to maximise his chances of getting a point against Celta Vigo
I don't think that Real Madrid will be willing to drop a point yet especially as Barcelona is leading them now so they will treat every match as priority, fielding their best eleven. That not withstanding, I agree with you that injury of most of their key players is a factor in their match schedules but you must understand that even the second eleven of Real Madrid is still a strong team to beat so the chances of dropping a point for Real Madrid is extremely low especially now that they need to win as many matches as possible to keep their hope of a trophy this season, alive.