Is there any way to improve the performance of my processor? And is it normal for "System" to use 15-20% while gaming? I know that the biggest problem with this is the cores that my processor has(4), but it is strange to me that on occasion the game uses 50-70% and random processes make them upload to 100%

My gpu is a rtx4050 6gb(laptop) and i have 12gb ram

Sorry for my ignorance and if these are silly questions. This is all new to me.