If you are "one-shot" (low health), retreat from combat to preserve your Average Killstreak (AVK) .
Utilize wall-based movement and jumps to stay mobile and harder to hit. Be A Parkour Ninja Aimbot
Instead of using exploits, you can improve your gameplay by mastering the mechanics detailed in the Be a Parkour Ninja Wiki : If you are "one-shot" (low health), retreat from