Don't you think getting him would be very expensive after just 1 season of signing at Manchester City?
They had a golden chance to get a centre forward from Bundesliga (Haaland and Lewandowski) last summer, but they thought they could depend on Benzema.
I am not one who like English related players because of the media hype, but maybe they can try Harry Kane and see how it goes.
Perhaps you don't remember that Madrid almost sign Mbappé and had prepared the bags full of money for that, but in the end the French star turned down the bid and prefer to stay with PSG. With the less active transfer activity in last transfer windows comparing to their rival Barcelona, I think Real Madrid save enough money for a huge transfer. I don't think Kane will suit in La Liga as it's completely different with premier league, unless if he can run as fast as Bale or have physique as strong as Lewandowski.
FC Barcelona is not at his best, financially speaking, and can't afford to get new players (even if it doesn't seem like they need it either). This can be a good opportunity for Real Madrid to catch up, although I'm not sure about who should they get among the players you mention. What is clear is that given their performance in La Liga, the worst option would be not to catch anyone.