

It’s a bit cliche but the first paragraph of wikipedia says it better than I could:
Communism (from Latin communis ‘common, universal’)[1][2] is a sociopolitical, philosophical, and economic ideology within the socialist movement,[1] whose goal is the creation of a communist society, a socioeconomic order centered on common ownership of the means of production, distribution, and exchange that allocates products in society based on need.[3][4][5] A communist society entails the absence of private property and social classes,[1] and ultimately money[6] and the state.[7][8][9]
https://en.wikipedia.org/wiki/Communism
My description above is just a quick way to point to the things that would change in our lived reality (assuming you live in a western democracy). You wouldn’t have to share your house or car or whatever. Just take responsibility for your workplace with colleagues, just like you vote in a democracy.
I don’t think that modern communists should follow the “centralize first and hope the leaders give up the power then” approach.