For now, Vinicius is still in recovery condition although he could appear when Real Madrid faces Celta Vigo because the recovery deadline for Vinicius is only two days from now. But there will also be a possibility for Ancelotti to play Arda Guler and Endrick in the match because both are still quite fit and several other players also still need rest for other more important matches. I also have no doubts about Real Madrid's ability to get three points at Celta Vigo's home ground because it is true as you said that Real Madrid need to keep the points gap close to Barcelona at times like this.
Madrid so far is a team that has a good squad depth, even though they are currently being hit by a storm of injuries but I think Carlo Ancelotti is most likely to rotate and provide opportunities for young players, the match against Celta Vigo should be an easy match for them to remember the head to head of the two teams so far, but remembering the inconsistency and also the number of Madrid players who are currently injured I think Madrid will definitely get a tough challenge in the match, against Celta Vigo will be a very crucial match to maintain the distance with Barcelona in the current La Liga standings, so far Vinicius may be doubtful to play after the injury he got, but Mbappe and Rodrygo look like they will be Madrid mainstays in the match and they still have a strong attacking in front line.
Los Blancos rumored triple injury update regarding upcoming Celta Vigo match next Sunday
If Madrid did not have the squad depth that they have, they would have absolutely crumbled under this plague of injuries. The only reason they are still being able to perform well and stay on top of the table is because of the good squad depth. In the next match against Celta Vigo, I think they are not going to have any problems even with the injury problems that they have right now.
Yes, Celta Vigo did win the last match. But I don’t think that is going to make any difference. it’s not like they were able to win against a great team. They were able to win against Las Palmas, the team which is at the absolute bottom of the table with zero wins. So I don’t think Real Madrid has anything to worry about. The only thing they have to worry about is the Champions League matches.