so no offense man but I wasted my time watching these all I see is you laying in corners ineffectively doing nothing for your team. so my only question is what exactly is a host booter and why they doing it to the guy that isn't doing anything???
1) He got his connection interrupted during the first video and couldn't do anything.
2) 'Host booting' is when someone identifies your IP address and floods it with more crap than your router and/or connection can handle, which means you get kicked offline. It's more common than it should be.
You can avoid it by not having any real-time contact with dubious people, but that's not avoidable if you're randomly put in a lobby with them.
Just hit the report button and end it. If once is not satisfying. Do what I do when I get pissed enough repot them for everything you can and the set your account to avoid them. The thing that sucks is they can still get put on your team just not play