Only East Germany ever was, and that was pretty much a Soviet puppet state. A unified Germany never was socialist. Even the so-called National Socialist Workers’s party (aka the Nazis) pushed very hard anti-Marxist messaging, but that tends to be overshadowed by their deplorable anti-semitism and attempt at genocide, just to name a few of their atrocities. (Source: https://www.statista.com/topics/1903/germany/#topicOverview)
And to be fair, socialism isn’t inherently a bad thing. Heck, even we as Americans have implemented some socialism in our country. Any public service, like roads, education, utilities, and to some extent healthcare are inherently socialist. What I mean is, it can be good in moderation, but too much can lead to ruin.
And you still haven’t convinced me that there is an inherent link between socialism and Islam. Show me some stats and cite your sources to bolster your argument. For future reference, Simply saying “do your own research” has a condescending undertone to it, and often weakens your argument as it’s commonly used to dodge questions to one’s claim. I’m not accusing you of doing that here, though, but I’m giving you the benefit of the doubt here on that.