@pale_rider4 Okay.
I usually use only a few different scopes on all weapons. Fusion Holo, Ghost Hybrid 1.5-4x are my go to scopes. There may be better choices, but these are available on a lot of weapons, and I usually ignore the weapons that don't. I usually also stick to my main configuration, unless I need a totally different behavior, like changing form an assault rifle from a burst or full-auto configuration to a semi-automatic long range configuration. Or a mid range suppressed bolt action rifle, to a long range configuration.
Your ping may influence your hit probability, especially when it varies a lot. My ping is pretty constant between 14-16ms.
But maybe I shouldn't give advise since my K/D is below 1 and I don't care about K/D
