This match will be an easy win for Real Madrid because they are currently the strongest in Laliga and they will not want Girona to top the table putting them behind. Real Madrid has the quality than Betis and I think that it will be impossible for Betis to stop them.
On the other hand Betis needs to try their best to make sure that they don't conceive more goals so that they might use the opportunity to see if they can equalize the match.
I am not sure that a draw can happen in this match no matter how Real Madrid play in this match. Real Madrid are in a better position and good playing form than Real Betis. Real Betis should not just try to concede many goals but winning or drawing this match is not an option to look up to in this match. Real Madrid are just few points ahead of Girona, in order to maintain a good lead and higher point difference, they won’t want to lose any match from now and give a away the first position to Girona again.
Otherwise, Real Madrid will only try to put tight pressure on Real Betis and in fact there is not much that Real Betis can do in the match. The reason of being the host is not enough to make Real Madrid just play a draw and victory by any score will definitely be achieved in this match. At least Real Madrid will score 2 goals and maybe Real Betis can only score 1 goal in this match and it looks like Real Madrid has rarely conceded so far.