This claim is false and not supported by credible evidence. Crimea was invaded and illegally annexed by Russia in 2014, when Russian troops seized key infrastructure and occupied the peninsula before a referendum that was widely condemned as illegitimate because it was conducted under military occupation. The United Nations General Assembly affirmed Ukraine's territorial integrity and declared the annexation invalid, and the vast majority of countries continue to recognize Crimea as part if Ukraine, not Russia, the claim that "Azov Nazis invaded Donbas" is misleading and reflects a well documented Russian propaganda narrative. While Ukraine has had some far right volunteer units such as the Azov Battalion, they represent a small fraction of Ukraine's forces and do not control the government or military. Independent reporting shows that the conflict in Donbas began with armed separatist movements backed by Russia, not a Ukrainian "Nazi invasion". Therefore, portraying Russia's actions as a "liberation" and Ukraine's defense as Nazi aggression is inaccurate and contradicts established international findings.
https://press.un.org/en/2014/ga11493.doc.htm
https://www.reuters.com/world/europe/events-leading-up-russias-invasion-ukraine-2022-02-28/