Was 9/11 a lie?

So, i was listening and watchin 9/11 videos and audio and I was suprised to come across this video saying that 9/11 was a lie. ( I dnt kno whether I believe them or not) but it was a lot of people saying things that, this was not what truly happened on that day, and the goverment is hiding stuff, blanzay, blanzay.. And at this point I don't know what to believe. I just really hope and pray that the government was not lying to us because we put many trust in them. Well at least I do hoping that they aren't lying to us. And on top of that, there has been a bomb threat issued for New York tommorrow. oh. I'm a fraid. Even though I live in Flordia, I still don't want anyone to die. Especially innocent bystanders who haven'nt done anything wrong. I am just worried. New York is in my prayers please put them in yours. And hopefully all the 9/11 victims are resting in peace. <3