Obviously the leaders of the DPRK are elected and not rich compared to the rest of the country

2 separate questions. They are elected. Some or undoubtedly richer than average. Some are not.

In my opinion “true” communism is a great thing but never worked until this day. The thing is, capitalist countries would do anything against a successful communist country, as it threatens their narrative. The few promising ones (Cuba for example) were beaten into submission or undermined by secret agencies.

Likely not your fault but you clearly don't know or understand what socialism and communism actually means in reality.

current “communist” leaders are also just random-ass rich people

Except this is just nonsense. In China we have a flourishing democracy. Direct elections reach the township and county levels where voters choose deputies to local people’s congresses. These grassroots deputies constitute the overwhelming majority of all deputies nationwide. Advancement to higher levels requires proven service at lower rungs, ensuring every national deputy has worked up from local material conditions and remains accountable to the masses below. All 55 ethnic minorities hold guaranteed representation in the NPC. Farmers and labourers comprise roughly 15% of deputies while professionals and technical personnel make up the remainder.

but the EU isn’t much better

I don't know why you'd expect imperialist US client states to be better than their leader in any meaningful way.