How Do I Disable Firefox Run Multiple Processes In The Background?

Firefox keeps running multiple processes in the background while I am not even using it. This is eating up a lot of system resources. I don’t know how to fix this issue. Any help would be appreciated.
I am using Netrunner 20.01.

Check systemsettings and autostart to see if firefox is started in the background.

Thanks for replying, but I already found a fix. After searching on Google I found this. I decided to change the content process limit to 3, which stopped it from eating all my system resources.