PC Build Help

Hey guys, I am on a budget of 500-700 $.

I am not here for a OVERKILL PC. I want to run Fortnite/LoL with no problems.

I just need it for a family friend who is young and just plays Fortnite/LoL on PC.

Please suggest me builds with where I can buy parts.

I built two PCs with refunded parts, separately worth over 2 grand. Or at least refund just the gpu, which is the most important part for gaming (usually the most expensive part too). Other than that, if you want to keep it cheap but fast you could use an AMD cpu like this guy: pc part picker.com/b/r7ZRsY

where are you located? sweden

cause if i know where you are i can give you a list with more accurate prices