There are multiple problems with this video.

Definition of communism: It is not adequate to pull up the dictionary definition of communism and use that as a starting point. The dictionary you used is a descriptive dictionary, and does not reflect an academic understanding of what communism actually is, only what it is widely thought of as. The Encyclopedia Britannica article was also vague and incorrect. The correct definition of communism is a stateless, classless, moneyless society, under where there exists no private property nor unjustified hierarchies.

Christian communism: I do not know why you mentioned Christian communism, and how it is relevant to the topic "Communism is garbage". Christian communists entirely ignore the problems of capturing the state and external influences, as well as the materialist perspective that is essential to Marxism. Christian communism is essentially similar to early utopian socialist movements, and it is not taken seriously by people with any real sense of praxis.

Cuba: Cuba is not a communist state, as defined by the previous definition. This is clear to anyone that has done the bare minimum of research on communism or on Cuba. Cuba has for sixty years been under heavy trade sanctions by the United States, and has had poor relations with European nations as well. This fact make it all the more impressive that Cuba has the highest life expectancy of any Caribbean nation, according to World Bank information from 2013: http://www.caribjournal.com/wp-content/uploads/2013/10/life.jpg. You can cross reference this with information from the CIA World Factbook and see similar results. Note that the other nations in the Caribbean are all capitalist countries, who have at times received US support. Cuban life expectancy is also higher than other Central American nations - information also very clearly available.

Socialist state: From a Leninist perspective, the socialist state is meant to build and own the factors of production in order to create the material conditions necessary for communism, at which point it will "wither away" and allow for the new society to take root. Quite obviously, communism cannot occur within one country, due to external imperialist powers which would inevitably take advantage of the situation and invade. Nor can it occur without the proper material conditions, which may be approaching sooner than previously thought due to the advent of automation and the vast increase of productivity that provides. Socialist states which have existed in the past have had at times abysmal foreign relations, and have been placed in very difficult situations. The USSR had to find a way to emerge out of a civil and world war, abolish its semi-feudal society, industrialize, and build socialism - all in the space of around thirty years, and without the help of industrialized nations. This would have been inconceivable to even Marx, who believed that revolutions would occur and succeed in the industrialized nations such as Great Britain or France - not the feudal or semi-feudal ones. The fact that the USSR not only succeeded but became the second largest superpower on Earth only speaks to the great successes of their centrally planned economic model. When Khrushchev took power, he declared the end of the "dictatorship of the proletariat" and stated that communism had been reached - this began the long trend of liberalization and introduction of markets, which led to a period of stagnation from the 1970s-1980s. This eventually ended with the dissolution of the USSR under the watch of the great class traitor Gorbachev.

 Against human nature: The way humans interact with each other is primarily determined by the conditions and society under which humans live. There is no one "human nature" which permeates across all societies and eras. Thus, we see that human nature is not a static concept and is subject to change. The notion of private (not personal ) property as described by capitalism was absent for most of human history. Marxists understand that the transition to communism cannot be achieved in one generation - as it requires a complete change from how humans interact in capitalist society.

Mixture capitalism socialism: It is not possible for there to exist a mixture of capitalism and socialism. Socialism requires worker ownership of the means of production through either direct control or via state control (which in turn is a representation of the people). Capitalism requires private control of the means of production. State owned industries in capitalist states are not socialism, as they operate entirely under the framework of capitalism. What you mean to say is that you want social democracy, or welfare state - regulated capitalism.

Your problem: While you admitted you were not a political expert, I do not understand why you made this video. With respect, it is clear that on this topic you have done only the barest of research, and I do not see what benefit it provides to your audience - it is essentially disinformation and it perpetuates common misconceptions about socialism/communism that are already ingrained in most people that live in western liberal democracies.