By all definition, you are an agnostic, unless you believe that God does not exist.
FFS, how many times do we have to go through this? No matter how many clever internet videos you find you and they do not get to change the definition of these words as some ploy in dealing with your opposition. For the last time...
Theism - belief in the existence of a God or gods.
Atheism - disbelief or lack of belief in the existence of God or gods.
Agnosticism - a person who claims neither faith nor disbelief in God or gods.
Verificationism - a philosophical term, and a doctrine that a proposition is only cognitive if it can be definitively determined to be either completely true or completely false.
Therefor your video makes a series of mistakes. You cannot be an atheist and still believe in God. You also cannot be an atheist and be concerned with Verificationism. Atheism does not "embody a diversity of views" nor does Atheism include Agnosticism and Verificationism. That is a blatant lie. If anything, Agnosticism has close ties to Verificationism but only in the sense of limitations on what is unknown and perhaps unknowable. But, Verificationism does have absolutes. You either determine something to be completely true or completely false. Agnosticism does not make that effort, nor is it about "having your cake and eating it too."
Theism and Atheism are flip sides of the same coin. They both make a statement of belief that happens to be opposing to one another. Hence the "A" in atheism to theism. That is the core reason there is no such thing as a believer atheist. Saying "maybe true" and "is true" then flies in the face of what Verificationism, again as a philosophical statement, is trying to make concrete one way or the other as completely true or completely false.
The video then trying to trap someone into saying "does or does not exist" as an absolute does not prove atheism or theism to be fact, it only tries to trap into the saying of which belief system one agrees with. The biggest issue there is one does not have to be one or the other. You can make a statement of belief that God or gods exist, you can make a statement of belief that God or gods do not exist, and you can make a third statement saying we cannot know for sure to give Verificationism any merit in this debate.
It seems both the people in that video were either confused or willfully trying to cloud definitions to make a failed point about what each thinks these terms mean.