Socialism hasn’t been perfect, the only people that think leftists are arguing for perfection are right-wingers. Marxism-Leninism is still correct analysis, and the USSR was still a massive improvement on existing conditions. It has not “lost,” it is continued by Cuba, China, Vietnam, Laos, and more. Blackshirts and Reds debunks a lot of common anti-communist myths.

One thing you seem to be misunderstanding is the idea that because there are mom and pop shops, that there aren’t fewer and fewer, with decreasing portions of the overall share of Capital. The barriers to legitimately compete with these megacorporations like Samsung are getting higher, you can’t legitimately compete with their resources and design work.

Finally, your mark on the presence of new modes of production emerging from the old is a misconception of the Marxist argument. What is Socialism? explains that in further detail, and Productive Forces explains societal progression. Slavery resurging was an aspect of settler-colonialism, a notion that remains to this day, this was not a resurgence of old pre-feudal economics.