Packet loss rates of 6% to 20% when pinging a public IP such as google.com

Hey all.

Over the last few months, I noticed that my ping in online games would suddenly spike and disconnect me from the game servers. I also noticed that these occurences happened in complete synchronization with when website loading times/ buffering times ould be excruciatingly slow. So, I followed the network troubleshooting guide on r/comcastxfinity and pinged several IPs such as 127.0.0.1, 10.0.0.1 and such. Everything looked fine until I pinged google.com (public IP) , where I saw several packets being lost as shown in the image. Someone please help.

I have the performance pro plan (175 down, 5 up), and an ISP provided XB6 modem/router. I have around 7 - 8 devices on at any point in the day, 2 of which are most likely gaming online, and sometimes 1 or 2 devices that are streaming video (netflix)

Edit: Image wont show so I'll just tell you whats going on when I ping google.com on the command prompt. So basically, very frequently and randomly, the prompt wil say "request timed out"  a few or several times before a response appears as shown below. Sometimes even a message stating " reply from (my gateway's WAN IP) destination host unreachable" will appear.

Reply from 172.217.14.174: bytes=32 time=17ms TTL=54
Reply from 172.217.14.174: bytes=32 time=15ms TTL=54
Reply from 172.217.14.174: bytes=32 time=18ms TTL=54
Request timed out.
Request timed out.
Reply from 172.217.14.174: bytes=32 time=20ms TTL=54
Reply from 172.217.14.174: bytes=32 time=16ms TTL=54
Reply from 172.217.14.174: bytes=32 time=17ms TTL=54
Reply from 172.217.14.174: bytes=32 time=18ms TTL=54
Reply from 172.217.14.174: bytes=32 time=59ms TTL=54
Request timed out.
Reply from 172.217.14.174: bytes=32 time=19ms TTL=54