High Ping in CSGO for no reason

[ThisOneAsian]

So a few days ago my dad reset the internet and after that my ping in csgo is 300+ for no reason before my dad reset the internet it was usually 5-50ping but ive tried everything I can ive reset the internet a few times ive reinstalled csgo restart steam but nothing and I know it doesn't have to do anything with my pc because before my dad reset the internet I ran csgo perfectly fine so if anyone can help that would be great ty

 

[ajpaolello]

How are you connected to the internet? Ethernet or Wifi?