New winter tyres from Michelin Alpin A4 very bad

Hello, I have had very good experience with Michelin, both with summer and winter tyres, as the tyres are also very durable. I drive 30TKm a year! Now I have purchased new winter tyres from Michelin Alpin A4, for price reasons I ordered from Amazon as linked here! They arrived also packed in foil, yesterday they were reassembled. On the way home I noticed that the tyres are less grippy, 1x I had to brake strongly, then I was almost able to This made me stunned and therefore tested, the tyres were literally on the slide. I never had that in the past. Did I make a mistake when ordering the internet? Plagiarism caught? Greeting Wuffi2009