Wipe your tears Hexbears, AOC will never ever give up!*

Rofl, yes lets ignore all the harm they have and continued to do

Providing people with guaranteed housing and helping anti-colonial movements around the world defend against you is the opposite of harm.

Also, given that you do not consider literal participation in a genocide to be bad enough to consider AOC your enemy (despite her complete lack of accomplishments that are not harm to the rest of the world), you shouldn't have any issues with whatever it is you want to bring up against Angola, Mozambique, Cuba, Korea, the USSR, etc.

I'm not going to rehash communist/capitalism history with you

Because you simply do not have any expertise on the topic. You never investigated it. You do not understand anything on the matter.

none of them solved homeless

Literally every state that implemented planned economy also implemented guaranteed housing (if you are aware of any exceptions, then go ahead and cite your sources). If your argument is 'technically, there were individual cases of people falling through the cracks', then you are obviously just being silly. Everybody will take reducing harm from happening systemically to happening on an individual level, and it is silly to try to suggest otherwise.

healthcare

Ditto. Planned economies are inherently interested in both guaranteed housing and universal healthcare. They are interested in implementing free medical services + cheap medicine. Countries like the USSR and Cuba were/are no exception.
Instead of making these wild and incorrect guesses, you should try studying these topics.

food issues

As per several studies, some of which were conducted by the CIA, the USSR provided its people with a better access to food than the US in at least 1960s onward (i.e. after recovering from WW2). The USSR also solved the regular famines that plagued the Russian Empire.
If you are going to suggest that people under classical colonial yoke were fed better before their liberation, I'm just going to laugh at you at this point.

or having a slave class

This is hilarious. What 'slave class' in the USSR?

Also, going to note that AOC is supporting enslavement and extermination of Palestinians. That's not enough for you to turn away from her.