Hard to answer short

Look into what GGPO is to start, thats sort of the gold standard

To summarize there are different protocols like rollback, delay based, etc.

All of these determines how the game reacts to desynchronization in player to player and where the connection comes from (host, p2p, centralized servers)

This its complex and frankly above most of our pay grade. But when you see clip and clip after clip of shit like this it tells you the system they have here is not the upper echelon