Real Madrid has always been linked with Mbappe and Osimhen but in reality Real Madrid has not given any indication that Real Madrid management will make an offer for these two players in this transfer window. I don't think Ancelotti will take a big gamble to recruit Osimhen because Osimhen performance has declined relatively this season, which could be a big blunder if Real Madrid recruit him. Even without a suitable replacement for the position left by Benzema, it seems that gap can be covered well by Ancelotti this season.
It is true that Real Madrid are looking for a goal machine for their center forward this season but I don't think they will be in a rush to target a quality striker this season. If we look at Real Madrid, they are almost transitioning their squad from old players to young players, so there is a reference that Real Madrid management will look for young talented strikers to prioritize in the long term.
Madrid are a big club and the current vacancy in the striker position means that they will always be linked with players like Mbappe and Osimhen and even Haaland is often linked with Madrid but we also know that this is just a traffic booster for some news because this is one of the interesting things to report so that regardless of whether or not they are targeting some of these players in the end the situation will be the same because the media will not care the most important thing they have news headlines to make news.
I personally still believe what Ancelotti said because it looks like for the striker position they will still wait until the end of the season then they add a striker.