I really don't get what's so great about Lautaro Martínez. Everytime I've seen him play he's had about 10 touches of the ball and basically did feck all for his team. He seems to be a poacher from the old days, like Roy Makaay, but he's not scoring goals right now and the game evolved. Being a good striker is about more than just scoring goals nowadays.
You gotta bring on Julián Álvarez from Manchester City for him in my opinion.
Edit: There comes Álvarez for Martínez and Messi scored. Worked like a charm.