It is very difficult to ensure that this match will be easy for Real Madrid, because Villareal is clearly also in promising form. In fact Villareal will make it more difficult for Madrid to get 3 points. The last time they met, both had a goal party of 4-4, this draw is of course still quite ideal as a reference considering the unstable condition of Madrid front line in creating its best game. The defeat in the Champions League is an important note for Carlo Ancelotti because until now with the best striker composition, he has not been able to provide satisfactory results.
Villareal are at a third position in La Liga table and they have only one point less than Real Madrid. Their ranks and very small point difference make their direct match more interesting. I disagree with you and think that Real Madrid will win this match.
I look at two things, total goals are the same for two clubs with 17 goals, but in conceded goals Real Madrid got 6 and Villareal got 15. This shows Real Madrid have good defense but Villareal have very weak defense. This will be their dead weakness in a match with Real Madrid that have very strong attacking power. Villareal not only have risk to lose this match but also have risk to get a big defeat.
But so far I think Real Madrid's attack line is also not entirely good and even, some of Real Madrid's wins in previous matches also only had goals through penalty kicks. Thus, if for example Villarreal's defense line can be more disciplined then I am sure Real Madrid will get a deadlock to score goals. But indeed, basically Real Madrid always has a chance to win and even if for example Real Madrid wins in this match I am sure the final score will not be that big.
At least, in Villarreal's away matches so far it also looks good, because based on the records so far, Villarreal has conceded more often in home matches. But indeed, to bet you still have to be careful because Real Madrid will also play at home but once again, in my personal opinion Real Madrid's attack line is not entirely good, so it seems it will still be difficult for Real Madrid to score goals in this match.