That is a very old graphics card which has a very weak performance rating for gaming.
While true, I note the OP seems pretty clear when he said (my
bold added),
I never played a video game in my life and I never will.
Then I say, leave the default settings alone! Windows knows how to properly utilize system resources right out of the box - especially for users who use their systems just like you - that is, for "normal" computing tasks like using Windows File Explorer, surfing the Internet, email, updating social media, or even streaming videos.
I also say, since you told us nothing else about your computer, there is NO WAY anyone here can tell you how to optimize your system -
"IF" it is even possible to improve performance just through any setting.
"Free" tasks you can perform to help improve and keep optimized your system include keeping Windows and your security programs current. I don't normally recommend updating drivers just because a new driver is out there except for the graphics driver. So if there is a newer driver for your card, install that. Also, keep your system clean of clutter. Use Windows own Disk Cleanup.
Also, make sure you have a nice big chunk of free disk space on your boot drive. Don't listen to anyone who says you need to keep a certain percentage free. That makes no sense these days. With today's HUGE drives, that could mean leaving 100s of gigabytes of disk space unused. Windows needs a nice chunk of free disk space but 30GB is plenty. If less than 30GB, I recommend uninstalling any programs you installed but don't use. There are other thing you can move and we can help you with that, if necessary.
I will add this; depending on your starting point, you typically get the most bang for your money by adding more RAM. So, for example, if you currently only have 4GB of RAM installed, bumping it up to 8GB
will provide a
significant performance boost.
However, note the gains go down from there. That is, if you currently have 8GB installed, bumping it up to 16GB will improve the performance, just not by very much - and depending on the task, it may not be noticeable at all.