Is it possible to update my MacBook Pro 2014 from Big Sur to the latest macOS?

Sorry, no. Big Sur is the last supported OS for that Mac.

I wouldn't tell my worst enemy to use Chrome.

Chrome is a known, massive resource hog. On top of that, from the moment you turn your Mac on to the time you turn it off, it is constantly sending anonymized data of your computer and web usage to Google's servers. Chrome doesn't even have to be running. The keystone agents…

/Library/LaunchDaemons/google.keystone.agent.plist

/Library/LaunchDaemons/google.keystone.xpcservice.plist

…do that by launching apps buried within the Chrome app, which load at startup. And then there's this.

We don't allow any software written by Google on our Macs. Not Chrome, Google Earth, or anything else. Google's real business is collecting marketing data. You are their unwilling and unpaid source for it when you use any of their junk. If you have one, you do not need Chrome to access your Google account. You can do that from any browser.

And yet another reason to never allow any app written by Google on your computer.

Google told users that when using incognito/private mode, Chrome would not track your usage, or collect data. They lied. It did anyway. Google has now agreed to settle the 2020 lawsuit with a five billion dollar fine.

But even so, according to another article on the lawsuit, that 5 billion is still a drop in the bucket to what Google has made on the collected data.

Does you current MBP do everything you need it do do? If it does then there's no technical reason you should get a new MBP.

That's true. The only important part is to not use Safari in that OS. It would be way behind on security updates. Better to use Brave or Firefox.

Kurt Lang wrote:

It would be way behind on security updates. Better to use Brave or Firefox.

I wholeheartedly agree with Kurt Lang on Chrome. Give Brave or Firefox a try. Both are much more secure than Chrome.