What should I upgrade on my PC

So I’ve had this thing for half a decade at this point. It was the first PC I ever got and I’ve been dealing with it being a PC which was cheap and not made for gaming. I’d like to see if there’s any recommendations I can add or upgrade to make it better rather than buying a entirely new PC

Here’s the specs

Acer Aspire TC-875

Intel(R) Core(TM) i5-10400 CPU @ 2.90GHz 2.90 GHz

8.00 GB (7.89 GB usable)

Intel(R) UHD Graphics 630 (128 MB)

477 GB SSD

Id like to cram a GPU in there if possible but I suck at hardware related topics so I’m not sure if could, which one I would, etc

So any recommendations would be helpful thank you!