Ukrainian and Russian are distinct languages that are, effectively, cousins to one another. Over a thousand years ago, there was a language spoken in central Europe that we now call proto-Slavic, an ancestor to all the Slavic languages spoken today. Speakers of proto-Slavic migrated across Europe, spread out, and settled down, and taught their children to speak their language. However, because they were so spread out into multiple communities, each community started doing things a little differently — and then, as time went on, things got more and more different, until eventually members of these communities that once spoke the same tongue became unable to understand one another. (This divergence of dialects over time and distance is how many languages evolve.)
Because they come from a common ancestor, there are a lot of similarities between Ukrainian and Russian. For example, the case system described earlier also exists in Russian, though the endings sometimes look different. Both Ukrainian and Russian have three genders: masculine, feminine, and neuter. They also have similar patterns of verb conjugations. However, verb and noun endings are often distinct in these languages, and there are some grammatical features (such as a unique future tense) that Ukrainian has that Russian does not.
So,the answer is no Russian and Ukrainians don't speak the same language but are very similar
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