Brave browser is running 16 processes on my laptop while i only have 6 tabs open

I was trying to join a zoom call today using the browser and was having poor quality with the call. I open up my task manager on my laptop to see what could be slowing it down and found that there were 16 processes running while I only had 6 tabs open. Obviously the zoom call took up most of my CPU(about 60-80%) but there were still a lot of other processes coming from the brave browser. Why were there so many? Is there a way to clear some of these to make my laptop run smoother? Once I quit the zoom call, brave has taken up less CPU but I want to still be able to run my calls on the browser. Thank you for your time.