Howdy,
That graph definitely isn't normal. Each graph point is 1/10th of a second. You can see in some cases you're losing ~19% of your packets in those periods. This would likely lead to enemies sometimes being in the wrong position or in more severe cases you might rubberband back to a previous position. Your shots are likely to be delayed as well.
Really you want to see the packet loss graph have 0 spikes in it if your internet is working properly (or maybe some smaller spikes every now and then, but really you should expect to see 0%).
If you're on Wifi you might try a wired connection. If not, you might need to restart your modem or router. If the problem persists you might try reaching out to player support or even your own ISP to troubleshoot the issue further.
I had a problem like this earlier today and was able to fix it by fixing some loose cables on my router.