Try adjusting your clutch cable then.
My car used to do what you’re saying only thing is that it was when the car got warm/hot from driving for a while. I bleed the brakes and the problem went away but I realized there were a few things that could fix this.
When the car got warm, the clutch fork would ‘flex’ a little more than normal. The air in the clutch line would expand and not allow me to depress the clutch to the right position to disengage the clutch.