need a help about cookie policy + GPDR + privacy policy

hello guys.
i need your help. i produced my website. i am on last step. I dont have any knowledge and experience about cookie policy and privacy policy. “Cookie notice” plugin is include in my theme xstore. i tried it a bit but i couldn’t understand it. i tried iubenda. because it s written that iubende also checking my website and telling what is absent about GDPR and creating privacy policy page etc. but also i am not sure which one is better. my shop will be in EU. so GDPR will work. please help this poor guy about that. which plugin i have to use to not have problems about GDPR and which plugin is creating privacy policy page.

thanks, sincerely…