Estonia, Latvia, Lithuania: tried to appease Russians, still got invaded, governments overthrown, puppets installed as replacements, a large part of the local population was deported to Siberian labor camps in multiple mass actions. https://en.wikipedia.org/wiki/June_deportation https://en.wikipedia.org/wiki/Operation_Priboi This was followed by a 50-year military occupation that saw severe violations of human rights, suppression of national identity, and developmental retardation that left these countries severely behind of their free counterparts.
Poland: Russians colluded with Hitler and invaded from both the west and the east in September 1939. Germans started burning Jews in ovens, Russians set up an industrial operation to murder Polish politicans, lawyers, officers and other national leaders by tens of thousands. https://en.wikipedia.org/wiki/Katyn_massacre Hundreds of thousands were murdered in total and 1.5 million deported to Siberia. https://en.wikipedia.org/wiki/Soviet_repressions_of_Polish_c... In Poland too, Russians installed a dictatorship at the end of WWII that severely held the country back until the 1990s.
The rest of the journey southward on the European map remains homework for you to complete.
After that, we can philosophize why no one likes Russians, if that still remains unclear.