How do I fix this

So as I posted earlier I am learning mouse and keyboard and I have run into one issue! I have always used double tap to fire and normal cast mode, I provided a picture because I am wondering if there is a way to keybind your basic attack ( the sword swing for ama, mercs punch, an adcs arrow etc) to the left click without making it set off abilities.

I find myself trying to combo abilities while using my normal attacks and I completely miss because Im pressing the abilities while attacking.

If it’s not possible to make the regular attacks to the left click without having it set off abilities does anyone have any solutions? Im super disappointed because I really liked mouse and keyboard so far but this is a huge deal breaker.