The Russian Invasion of the Ukraine is very complex and difficult to follow. It is also difficult to know what is true and what is not, particularly when events change so much. The history behind the invasion is long and complex.
Here is a longer video on the topic. However, if you don't have time to read all of it, below are resources to help you better understand the war in Eastern Europe.
These news resources are considered to be more reliable. However, one must be aware that the information is consistently changing and updating.