Ping around 1000

I've been having this lag in some games and it has been increasing recently. My internet to what I know of is good. I usually get around 150 ping but I'm not sure the exact reason of this lag spikes.

https://gyazo.com/0eb3c233d4de91aa8fa233b4b5582f8f

https://gyazo.com/cf102ad20a3926816af42f727b0b4265

P.S: I tried to remove the link https://support.riotgames.com/hc/en-us/articles/209765743 but I didn't how to. I'm still new to these "boards" :P