Much of the waste was sent to Turkey, followed by Malaysia, with Indonesia also a regular destination. Investigations have repeatedly linked the plastic recycling industry in these countries to environmental damage, illegal dumping and burning, and labour abuses.
i feel like you're not arguing in good faith. my other replies makes it abundantly clear what my point is, but i'll reiterate anyway: germany's plastic export per capita is lower than many other european countries, so singling them out by presenting the number without context is unproductive. in cases like this you want to be going for the low-hanging; if italy exports 15kg of plastic per year, then it's cheaper and faster to get italy down to 9kg rather than inventing new technology to get germany down to 7. repeat for every country. naming and shaming doesn't work when they're in the lead.
sweden missed their paris accord climate goals because of thinking like yours: the accords called for improvement in greenhouse gas emissions from industry every year by a certain number of tons, and we couldn't get there because we were already using the latest tech. poland, meanwhile, started slowing down their transition because the better they did one year the harder the next one would be.