Real Madrid will be facing a team which is almost in the relegation zone. But I still think that Real Madrid is not going to take any chances because they have already lost a match four-zero which was quite humiliating for them against a very weaker opponent. So they are not going to make that same mistake again in my opinion.
And it is also true that they have the time before the Champions League match. So, they can afford to put importance into this La Liga match. Almeria is not a very hard opponent for Real Madrid. I am not expecting any surprises in this match.
Real Madrid is currently only 2 points ahead of Atletico Madrid. So they would also want to make sure that there are able to stay in the second position and not throw away the second position just because of caring too much about the Champions League.
regards
Duke
If you're talking about the Girona game, it ended 4-2 and not once was it 4-0 during that game. The maximum advantage that Girona had was with the score 4-1. By the way, I think it was a useful defeat for Real - such results "return to the ground" and the players become more disciplined in general, and do not try to show their maximum in separate "important" games. Consistency in relation to work (for footballers, a game is work) has a positive effect on the results in each game, both important and unimportant.