Hello.........I am surprised since Clickteam Fusion has an official webpage on Itch.io.

Clickteam Fusion is a popular game engine.....Sure..!

I want to say that a good discussion is in the following  thread. Actually, some opinions are about Clickteam Fusion.
https://itch.io/t/903375/gamemaker-vs-construct-vs-fusion-vs-001-game-creator-vs...