Europe will be cold. No Russian gas means we'll buy from other sources at an elevated price, so your supplier will basically tell you "why should I sell you at the same price we negotiated last year, when desperate overseas customers will pay me 2x as much?».
You're only safe if your energy is produced by local, non transferrable sources (hydroelectric, solar, wind, nuclear); if you rely on oil or methane for heating yourself definitely buy thicker blankets