get a map!
poland is not beside russia, it was not a simple bad turn from russian border or bad turn from ukraine due to jamming.. there is belarus and lithuania/latvia buffering poland away from russia..

if anything it could be russia using the baltic sea as incursion border and hopes to then go south east unnoticed over poland to enter ukraine.. or go noticed to poke/provoke poland (one drone found inn olesno(north poland (near baltic sea))

..
the drones were not that of military/weaponised drones. but more so wood/foam decoy drones*. so not really a threat to poland.. more of just a psychological poke

*the drones were Chinese-designed 'Gerbera' drones, but used before by russia and have Cyrillic alphabet and numeric printed on them (not chinese)