You're underestimating how many areas Ange needs to improve on.I see a lot of fans on social media saying how he's struggling compared to what Conte, Mourinho and Poch achieved. I think what a lot of people forget is they had prime Son and Kane, with also players like Dele, Dembele, Vertonghen and Alderweireld.
He lost one of the greatest striker the world has ever seen on the dawn of his first league match, he's also had to put up with big wage cuts and 2 injury hit seasons. It's not fair to compare him to those before him.
There are areas Ange needs to improve on such as his in-game management, making proactive subs and making those small tactical changes. But sacking him now just adds a name to another list of managers failed by the hierarchy. The next manager will suffer the same, and so on.
Start coaching.
Start improving players.