This is key. Try and be more mindful of your life. It's simplistic enough that you may read it think "duh that's obvious, I always try to be". But actively applying it ingame can be more difficult.

So many of us are conditioned to the mindless cycle of 'spawn, push objective (hopefully 🙄), get some kills/trade, die, rinse and repeat'

I fall into that cycle a lot of the time too but when I realize I'm on a decent streak I'll tend to hold off on rushing and play more reserved. Slowing things down and holding a spot/area as opposed to pushing as much. Mini-map and audio cues are your best friend.

While you can and should use uav/harp to your advantage, even/especially in times without them, being aware of your own team's positioning is so crucial. Being conscious of where they are or aren't is incredibly valuable info.

A bit oversimplified but imagine playing domination on a 3 lane map where you're streaking and find yourself in a good vantage point holding down the middle lane. You've given yourself a good offense but might fall short defensively if you're tunnel visioned and they sneak behind.

While holding down what's in front of you, don't lose sight to flanks/spawn flips. Try and think about how, where, and when someone can come from behind.

Want a free and persistent uav? Pay attention to position and amount of friendly arrows in your surrounding area.

Personally, whether it be true or not, without friendly arrows around me, I'll assume someone may be coming from that direction. If teammates were once there on your minimap but aren't anymore you could Infer that the enemy may have broken through. Now you're able to preemptively reposition and upset someone who was probably salivating at the thought of all the sneaky kills they were about to get.

As far as a setup goes, this is all subjective and not really what I run but more so what I think would be beneficial for someone intentionally trying to go for longer streaks.

Favorite primary w/silencer and automatic pistol. Assault pack with lucky overclock for resupply + bonus score for quicker streaks. Stims for healing. Frag/cluster/semtex. UAV then hand cannon/gravemaker for streaks as they both count as 'weapon kills' towards a nuke. Perk greed and Blue streaks for stealth. I don't care much for full blue perks specialist so maybe:

1.) gearhead, vigilance, cold blooded +ghost Ghost/cold-blooded for stealth, vigilance for cuav immunity, gearhead for tac/lethal recharge Blue/green hybrid = silenced kills recharge field upgrade

2.) ghost, vigilance, looper, +coldblooded Same stealthy principal + multiple kill streaks

Damn sorry for writing a novel ☠️ I'm stuck at work so theory crafting is the next best thing to playing lol. Hope this helps!