are you obtuse..
so they are(in your view) able to fly into ukraine, from the east border with russia. get jammed.. and instead of crashing or running out of fuel.. continue through ukraine for 800 miles. never shot down by any military in ukraine. just continue on. continue on.. and then once in poland suddenly they are spotted where some are shot down and some just crash.. and some make it all the way up north(many more hundreds of miles)..

i dont think you ar really trying to think about it. but just wanting to post-repeat whatever you seen on social media, which link to limited investigated reports from news media.

maybe try to join some dots together like how a drone was seen near the baltic sea border, but none seen in ukraine, belarus, latvia or lithuania before being spotted in poland

..
there are seedlings of rumours and gossip suggesting that belarus launched the drones on behalf of russia .. but this is mostly conjecture trying to cause more countries to be involved. trying to push for more countries to be seen adversarial. EG trying to entice a false aggression between belarus and poland.

but when wreckage is found in northern poland by the baltic sea which is known to harbour russian ships that can and have launched drones before.. [Occam's razor] the simplest logical version based on available information usually turns out to be the truth