My Hotmail junk folder is always full of very suspicious things. I always delete the whole folder,Why do I keep getting these scary things & how do I get them to stop sending to me?

The e-mails say I have won things,lots of them are in foreign languages,they say I have deliveries,a lot use my name and some are just lots of numbers and letters almost like someone is using some sort of code.I delete the whole folder daily(20 plus of these sometimes)I worry I might accidentally  open one of these ,I just want to get rid of them,any help would be appreciated!!!! I am not very good with computer skills so all this is frightening. Thank You!