I am not sure who else Real could get, but focusing too much on midfield which is already decent enough is not the way to go. First of all they always needed a striker, that season Benzema had which won him ballon d'or made them suspicious about getting one but they need one without a doubt.
Since we are talking about Real here, they can't just get a decent player, they need a big name, not sure how big of a name they will get, not like they will get Mbappe, but I bet that they are going to get someone very special without a doubt. They have no other choice, they have to get one and that will be a very important situation. If they can get a good one then they are going to be good, if not then they are going to be a pretty boring team again.
Apart from Mbappe, who has been a target for Real Madrid in recent seasons, Kane is another. Kane is a worthy target to replace Benzema, but other rumors suggest that Manchester United are also expecting him to play at Old Trafford next season. Kane's situation is not yet clear whether he will go to Real Madrid or Manchester United, so of course with him Real Madrid must find other alternatives so they can bring in the best striker next season.
Kane is a reliable striker who can operate on the front lines of Real Madrid. Ancelotti's strategy seems to suit him and he will be a mainstay for the next few seasons. But I doubt if Kane will move to the Santiago Bernabeu or even stay in the Premier League for Manchester United.