Hey Samir,
We thank you for reporting. But the evidence you've provided doesn't prove Fulton using the lag tool or any such thing. I'll explain to you briefly.
1-There's something called lead aim as mentioned by
@Ryne earlier. If you look at your shots and
@FulToN_619 's shots, you'll notice that you're aiming straight at him while he is aiming at the position where you aim to move to. This is what we call desync in VC-MP. The position you're looking a player at is not usually true. This why you need to tackle the movement of him/her.
2-You're claiming he enabled the lag tool during the fight. Which is although not possible in my point of view and, he's proven in his posted video, right?
3-Experience and skills matter.
The report has been marked as solved. If you get any further legit evidence, you're allowed to report any such occasion.