Sage advice.8GB is plenty for simple safari browsing and watching Netflix. I would ignore that message that pops up on safari I get that on Reddit and Apple's own website and YouTube and I have a 16" 2019 with 16GB of RAM. It's just a warning to tell you that "hey this website is consuming more RAM than usual".
As long the memory pressure in Activity Monitor isn't RED or YELLOW, you should be fine.
When in doubt, check memory pressure. Want to know if you need to get 8GB of RAM or 16GB of RAM for your usual daily workflow, check your memory pressure. A lot of people don't think to do that. They see the MacOS taking as much memory as it can and a lot of people start panicking.