Anyone know this guy? Claims I cheated when I didn’t?

To put it simply, I, like any other, hate cheaters. I would never cheat as I think those that need to resort to cheating simply don’t know how to learn how to play a game. Cheating would ruin the fun. But they seem insistent on the fact that I’ve cheated, despite not answering when I asked what hacks I used, twice. Says they’re a streamer but I haven’t seen them and don’t know how to find them. They also say they have it on video so, that’s interesting? Best I can say is that maybe they had lag issues? I know it happens and, due to lag, I saw a guy suddenly rocket from his spawn to a nearby doorway, which allowed him to kill me, but I figured it was lag and ignored it. My stats alone show that I sure as hell wasn’t cheating, I’ve just gotten used to my gun and know how to use it fairly well. Anyway, if anyone could help me find him, or at least be able to advocate for my side of the story, it would be much appreciated.

Thanks!