One of the recurring Pro-Kremlin narratives Elites vs. People, describing particularly Baltic political elites as corrupt, putting their population at risk.
The NATO expansion is also a recurring pro-Kremlin disinformation narrative. NATO does not "expand" in the imperialistic sense described by the Kremlin leadership and Russian state media, but instead considers the applications of candidate countries that want to join the defensive alliance of their own national will. NATO enlargement is not directed against Russia.
NATO's presence in the region is at the request of the host nations. NATO has taken defensive and proportionate steps in response to a changed security environment. Following Russia's aggressive actions against Ukraine, Allies requested a greater NATO presence in the region. A 2016 Gallup poll found that most people in Allied countries in the Baltic region associate NATO with the protection of their country.
NATO is a defensive alliance, whose purpose is to protect its member states. Allies' (not American) exercises and military deployments are not directed against Russia – or any other country. Information about NATO exercises can be read here. More on the military exercises, mentioned above, here