Most finns, especially the young generations, feel most affinity towards west in every sense.
The Finnish language is Finno-Ugric and unrelated to slavic tongues hence there is a huge language gap. Finns don't as a rule undertand russian.
The political and judicial system is based on western principles.
So Russia in general is a very alien entity not only linguistically but culturally as well.
The signal that drove to this was two-fold - first Russia at the end of last year forbade Sweden and Finland joining NATO, clearly signaling it considers these states as "it's property".
Then the war in Ukraine - Bucha and Mariupol - turned the perception of Russia into complete Mordor in a single stroke. It was very easy to replace Bucha and Mariupol with Finnish cities in ones imagination - and we still have people who remember the sound of Russian bombers striking our cities from '40s.
Finns in general do not exacerbate political tensions one way or another and are used to a mostly consensus-seeking political process. So not sure what signals you interpreted as "friendly" and what was just "common politeness".
The relationship with Russia is a bit conflicted - Finland rose from a dirt poor agrarian state to a fledling industrial state when it was a grand dutchy under a personal union with the Russian czar (so "part of Russia" but also "not part of Russia"). Most of the historical goodwill - if any - was destroyed by the russification attempts starting in late 19th century and were more or less eradicated during the second world war as Stalin tried to conquer Finland.
The war in Ukraine has made the Russian state appear twisted, dark, deranged and unpredictable for decades to come.