Leverage trading is available to the German people.
You can make use of sites like Bybit, Binance, Bitget for it. You can use a noncustodial option like Hyperliquid.
German citizens are exposed to both German financial supervisory regulations (BAfin) and EU rules for crypto retail users, which limit their leverage position to a low of 2:1 leverage, this means that German retail traders can't use anything above that leverage number like 10x-150x leverage we are open to, even exchanges are faced with a lot of regulatory conditions like market protection.
Lastly, those exchanges you mentioned are not among those offering leverage services to the German market, the most popular exchange we know among the top few exchanges operating leverage market in Germany is Coinbase, OKX, Kraken, etc.