Unknown completed payment

Description

Hello community, This morning i was surprised to see that a payment of 50 euro was completed on my PayPal account to Riot Games, Limited (which obviously i didn’t do), I checked my account and to my surprise again, i found that there is another phone number connected to my account and another email as well. The other phone number although wasn’t verified but it was the primary one. So now, I removed my bank card and removed that number and put back mine as the primary and verified it. Do have any explanation,? How can get back my money ? How can i know, if someone logged in to my account ? Thanks in advance,