I don't keep videos of all the games i play. It is not my job to record everything. i have reported a bunch of people though and i hope they get banned pretty soon.
"How are thy hacking?"
Depends on the cheater. I have seen people use a teleport/speedhack and literally traverse 500meters distance in 1 seconds.
I have seen people only lock from head to head even to targets that are spread out in great distances or even behind the shooter without having shot at them.
The extremely common is tracking through walls the movement real time (ESP). It just depends really. I saw yesterday a Wraith that survived a bangalore ultimate, a gibraltar ultimate, 2 thermites and 3 people shooting at her at the same time and simply turn around and proceed to headshot all 3 with a wingman with no attachments...Pretty certain that was an armor/health cheat.