I have no idea where you are getting your information from, but it is certainly not reality. Surveys show that public opinion of the Israeli government is falling steadily across Western Europe, including Germany.

And free speech is protected in Germany, it is by no means illegal to denounce or criticise any government or group.

https://yougov.co.uk/international/articles/52279-net-favourability-towards-israel-reaches-new-lows-in-key-western-european-countries