And what if you're wrong and Le Pen will be even worse than Macron?
I'm not a voter and French will elect whomever they want and Poland will have to deal with whoever is in charge. Aslo I don't think I'm wrong - there is no fool proof opinions, actions or decisitions.
France has its interets and they will roll with it.
On a side note - seems to me that La Pen is a token boogie man/woman. She gather all those who are not pleased with a current government, in second round all lefties gathers and vote on Mikron just to keep that terrible boogie man out of the office. Look staged to me but here I can be wrong as I don't care that much who rule in France - they will always support Germany and have hots for Russia.
You like her only because she's a nationalist -
I neither like her or dislike her - I don't know her well enough to have personal preferences. I don't care who is going to win. French policy towards Russia and Poland will not change no matter who will win.