While the Israeli lobbying in politics seems "huge", it is done in the open. Everyone and their dog knows about AIPAC and the military aid that is provided to Israel so that Israel can buy US-made weapons (or, for that matter, the German aid for U-boats). That's not really a problem IMHO - it both provides jobs in the defense industry without supplying weapons to Saudi-Arabia at the same time, and ensures the stability and viability of the one true democracy in the Middle East. In addition, given the rise of antisemitism happening all over the world it is an absolute imperative that Jews do have a "safe place" in this world. That's what the purpose of Israel actually is and why it was founded!
The Russian meddling, however, is different: it is done covertly. Russian agents bribed politicians, financed or directly controlled troll campaigns on Twitter, Facebook and Youtube. They directly or through obscure "loans" and "donations" finance far-right parties across Europe and destabilize democracies.
While I'm not a big fan of lobbying at all, I vastly prefer it to what the Russians are doing.