>No it doesn't. What creates filter bubbles is ranking sites differently for each person, what has no relation at all with the criteria you use on your rank
That's assuming there's only one platform. When users can choose other search engines (or social media sites, video platforms, etc) then it absolutely creates a filter bubble when each platform injects its own bias into its content. No algorithm is perfect but I'd generally prefer my search results without deliberate bias.
Plus you'd have to be knee deep in the koolaid to think that only russian sources are propaganda. It just ao happens they are obviously on the "other side" today but let's not pretend that US and Ukranian sources aren't coming with their own healthy dose of spin.
For example, all the recent reports of civilian infrastructure being bombed are most certainly leaving out that these buildings were being used by Ukranian forces, much like reports of Israel targeting civilian buildings. That doesn't justify the russian actions since putin is fighting an unjust war of aggression, but that important context is an example of spin that is all over the "approved" sources of information.