Why are there 61 Firefox folders in Task Manager?

Hello, First, go to Firefox, then press Shift + Esc, then it will open a window showing each subprocess and which one is eating the most RAM. If it is a tab, then you can just close it to instantly free up more RAM. Next, go to about:memory, and click the "Minimize memory usage" button, which will make Firefox, minimize memory. After that, to reduce Firefox's RAM footprint even more, disable any outdated/faulty extensions, as they can be a major source of memory consumption. Next, go to menu>settings>performance, uncheck "Use recommended performance settings" and check "Use hardware acceleration when available". After that, restart Firefox. Next, if you keep a lot of tabs open, try closing some or getting an extension to put them to sleep, which frees up the ram from that website.