Hi onursenturk9737,
Thanks for reaching to us.
1. Try to regenerate Regenerate the product attributes lookup table in Woocommerce > Status > Tools https://take.ms/LGpvf
In addition, please check Woocommerce > Settings > Product tab > Advanced tab and disable Use the product attributes lookup table for catalog filtering. Also, please make sure you added variable products and check again.
3. Please test this sidebar for Shop page as well to see if it works.
Best Regards,