Jeremy Sisto's character sends one Agent to one place, and one to another to find the kidnapper.
This would NEVER happen. Agents are ALWAYS in pairs, but in a situation such as this, there will also be backup in the form of other Agents, or local police.
The plot line is that one of the 2 million followers had kidnapped the child. In reality, anyone can watch a channel such as YouTube without subscribing or being a follower. It is possible to watch every video on a channel such as the one depicted without being a follower, so the actual pool of suspects would be far greater than the 2 million stated.
When the female agent is taking gunfire, she calls for her partner, not local law enforcement. Local law enforcement could respond far more quickly and would be better-equipped to deal with the threat presented.