I have been hearing about that, I'll need to alter that ending phrase for the future.
I do agree about trying to look for more positives. From the perspective of a learning experience, these would come from the Godot mechanics you would attempt to apply, such as staying true to collision boxes instead of saying "If this projectile flies for an amount of time, then the player was damaged."
Take it in stride. You'll get there if you keep going, even if I didn't happen to be nice on this go around.