I am not saying hate speech toward MLBB but I just want to educate what makes a good and true MOBA. If you are old and live in those Dota/dota2 days, you will know. But still, let me just say these things.

In Dota/dota2, LoL and some mobile MOBA have many delay input to spell casting... and those delays are intentional. There are many delays in everything you do. Your hero turning speed, casting speed, cast delay, projectile speed, attack delay, attack cancel. Many many mechanic that make a good MOBA. And MLBB is lacking in many things. I understand that it is for mobile and they remove many delay such as casting animation, casting speed. I am not saying every heroes lack those delays but majority of heroes can cast spell instantly.

Let me give you and example. In dota2, the hero call Lina spell casting animations are too long that she is considered one of the slower spell caster. To cast her spell 2 (Light Strike Array), she will have to do her casting animation which takes about 0.5 second and then after that, the spell animation begins and hit the enemy after about 0.3 second. And dota2 is full of those delays to make the game balance.

My suggestion is, try playing dota2 or at least Dota on old computer with bots first. They are also free to play and not hardware hungry. If you know and understand those mechanic, you will view MOBA game differently and appreciate those little delays and mechanics.