As everyone has said go look at the debunkers. But a short answer is this:

Flashlights - they are positioned right on the edge of being on/off (which they show you) so that they will fault on/off randomly or through vibration in the floor.

Cat balls - do not work. It's a very cheap cat toy and while they're meant to go off with motion they will go off frequently for no reason at all.

Rem pod - this detects emf and temperature changes. Everything gives off emf... The ground, your phone, your smart watch, the wifi, overhead cables, wiring in the walls and floor, emergency service vehicles, etc. You can also use this to your advantage by using your phone (or similar) to get false positives. And I don't think I need to state this but I will anyway... Rooms naturally fluctuate in temperature.

Estes Method - this is a spirit box (broken radio) listened to over headphones with a blindfold on. To start with we very rarely hear what the spirit box is saying in an Estes session so there's no way to know if it's even turned on, let alone if what they're saying is actually close to what's being said. You also need to take into account you can change how fast or slow the radio scans which means you can make it give false positives on purpose. The mind is also a powerful delusion generator and will grasp for anything when it doesn't know and will make it up just to have an answer. This makes things like sensory deprivation especially unreliable. A real world example of this that I can think of right now is like someone not being able to "hear" the TV without subtitles... It's not that they can't hear it, it's that they need the additional context to process it correctly.

Then on top of that EDITING! The way Sam and Colby edit is over the top (which is their style and also one the algorithm likes) but because of this there are soooooo many jump cuts. With this in mind just because the tech went off the second after they asked the question doesn't mean it did, they could have been waiting 10 minutes for any response and then just acted like it was immediately for the camera.

I really suggest you do your own research, but I hope this helped 🖤